Quick recall · 271 cards
Short MCQ-style retrieval prompts. Tap a card to reveal the answer.
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Smother crops used in vegetable rotations help in what intercultural objective?
B · Suppressing weed growth
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Which of the following is NOT a characteristic feature of smother crops in horticultural systems?
C · Slow establishment requiring 2-3 months
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Which of the following best describes the primary competition caused by weeds in horticultural crops?
B · Competition for water and nutrients primarily
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Inarching grafting method is practiced in which of the following?
D · All of the above
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What is the name of process where the plants are isolated and acclimatized to the climate where it is grown?
B · Hardening
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What is the scientific name of the Strawberry?
B · Fragaria ananassa
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The eyes of potato are useful for?
B · B. Vegetative propagation
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Coconut is propagated by which of the following methods?
A · A. Seedlings
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Inarching grafting method is practiced in which of the following?
A · A. Mango
PYQ
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Producing plants from seed is a type of what?
C · Sexual propagation
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The eyes of potato are useful for?
B · Vegetative propagation
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Coconut is propagated through which method?
A · Seedlings
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Inarching grafting method is practiced in which of the following crops?
A · Mango
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Which of the following best defines horticulture?
B · The science and art of cultivating fruits, vegetables, flowers, and ornamental plants
Horticulture is specifically concerned with the cultivation of fruits, vegetables, flowers, and ornamental plants, distinguishing it from general field crop cultivation or animal husbandry.
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Horticulture primarily involves the cultivation of:
B · Fruits, vegetables, flowers, and landscaping plants
Horticulture focuses on growing fruits, vegetables, flowers, and ornamental plants used in landscaping, unlike cereals or livestock production.
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Which of the following statements correctly describes horticulture?
B · It deals with the intensive cultivation of plants for food, comfort, and beautification
Horticulture involves intensive cultivation of plants that provide food, comfort, and aesthetic value, unlike grain production or animal breeding.
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Which of the following is NOT included in the scope of horticulture?
C · Animal husbandry
Animal husbandry is related to livestock management and is not part of horticulture, which focuses on plant cultivation.
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Which branch of horticulture deals with the cultivation of flowers for commercial and decorative purposes?
C · Floriculture
Floriculture is the branch of horticulture concerned with the cultivation of flowers for commercial and ornamental use.
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Which of the following best describes the scope of horticulture?
B · Includes fruits, vegetables, flowers, landscaping, and medicinal plants
Horticulture includes a wide range of plant cultivation activities such as fruits, vegetables, flowers, landscaping, and medicinal plants.
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Which of the following is a challenging aspect when expanding the scope of horticulture?
B · Requirement of specialized knowledge and technology
Expanding horticulture requires specialized knowledge and technology for successful cultivation, which can be a challenge.
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One of the primary importance of horticulture is that it:
B · Improves nutritional security through diverse food crops
Horticulture contributes significantly to nutritional security by providing a variety of fruits and vegetables rich in vitamins and minerals.
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Which of the following is an economic importance of horticulture?
B · It generates employment and foreign exchange
Horticulture generates employment opportunities and contributes to foreign exchange earnings through export of fruits, vegetables, and flowers.
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Which of the following best explains the importance of horticulture in improving human health?
B · By providing fruits and vegetables rich in vitamins and antioxidants
Horticultural crops like fruits and vegetables are rich in vitamins and antioxidants, which are essential for human health.
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How does horticulture contribute to environmental sustainability?
B · By enhancing biodiversity and improving soil health
Horticulture promotes biodiversity through diverse plant species and improves soil health via organic practices, aiding environmental sustainability.
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Which of the following is a complex importance of horticulture related to socio-economic development?
B · It supports rural livelihoods and empowers small-scale farmers
Horticulture supports rural livelihoods by providing income and employment, especially for small-scale farmers, thus aiding socio-economic development.
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Which statement best describes the relationship between horticulture and agriculture?
A · Horticulture is a sub-branch of agriculture focusing on intensive plant cultivation
Horticulture is a specialized branch of agriculture that focuses on intensive cultivation of fruits, vegetables, flowers, and ornamental plants.
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How does horticulture differ from general agriculture?
C · Horticulture involves intensive cultivation of high-value crops like fruits and flowers
Horticulture is characterized by intensive cultivation of high-value crops such as fruits, vegetables, and flowers, unlike general agriculture which includes all crop and livestock production.
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Which of the following best illustrates the relationship between horticulture and agriculture?
C · Horticulture is a specialized branch of agriculture focusing on garden crops
Horticulture is a specialized branch of agriculture that deals with garden crops like fruits, vegetables, and flowers.
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Which of the following is a complex aspect of the relationship between horticulture and agriculture?
B · Horticulture contributes to diversification and sustainability within agriculture
Horticulture contributes to agricultural diversification and sustainability by introducing high-value crops and improving resource use efficiency.
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Which of the following best describes the economic significance of horticulture?
B · It provides raw materials for industries and generates export earnings
Horticulture supplies raw materials to various industries and contributes significantly to export earnings and the national economy.
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Which of the following is an economic benefit of horticulture?
B · Generation of employment and income
Horticulture generates employment and income opportunities, especially in rural areas, contributing positively to the economy.
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How does horticulture contribute to the industrial sector?
A · By providing raw materials like fruits and flowers for processing industries
Horticulture provides raw materials such as fruits, vegetables, and flowers that are used in food processing, pharmaceutical, and cosmetic industries.
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Which of the following is a complex economic challenge faced by the horticulture sector?
B · High post-harvest losses and inadequate infrastructure
High post-harvest losses due to inadequate storage and transportation infrastructure pose significant economic challenges in horticulture.
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Which branch of horticulture is concerned with the cultivation of fruits?
A · Pomology
Pomology is the branch of horticulture that deals with the cultivation and management of fruit crops.
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Olericulture is the branch of horticulture that deals with:
B · Vegetable cultivation
Olericulture focuses on the cultivation and management of vegetable crops.
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Which branch of horticulture focuses on designing and maintaining gardens and green spaces?
D · Landscape horticulture
Landscape horticulture involves planning, designing, and maintaining gardens, parks, and green spaces for aesthetic and functional purposes.
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Which of the following branches of horticulture is primarily concerned with the commercial production of flowers?
B · Floriculture
Floriculture is the branch dealing with the commercial cultivation and marketing of flowers.
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Which of the following best describes the role of horticulture in sustainable agriculture?
B · It enhances biodiversity and efficient resource use
Horticulture promotes biodiversity and efficient use of resources, contributing to sustainable agricultural practices.
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How does horticulture contribute to food security?
B · By providing diverse and nutrient-rich food crops
Horticulture provides a variety of nutrient-rich fruits and vegetables that enhance food and nutritional security.
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Which of the following practices in horticulture supports sustainable agriculture?
B · Crop diversification and organic farming
Crop diversification and organic farming are sustainable practices promoted by horticulture to maintain soil health and ecological balance.
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Which of the following is a complex role of horticulture in ensuring food security?
B · Enhancing resilience to climate change through crop diversification
Horticulture enhances food security by promoting crop diversification, which increases resilience to climate change and reduces risk of crop failure.
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Which of the following best defines horticulture?
B · The science and art of growing fruits, vegetables, flowers, and ornamental plants
Horticulture specifically deals with the cultivation of fruits, vegetables, flowers, and ornamental plants, distinguishing it from general agriculture.
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Horticulture primarily involves which of the following activities?
B · Growing fruits, vegetables, and ornamental plants
Horticulture focuses on the cultivation of fruits, vegetables, flowers, and ornamental plants rather than field crops or livestock.
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Which statement accurately describes the scope of horticulture?
B · It includes cultivation, processing, and marketing of fruits, vegetables, flowers, and medicinal plants
The scope of horticulture is broad, covering cultivation, processing, and marketing of various horticultural crops including fruits, vegetables, flowers, and medicinal plants.
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Which of the following is NOT included in the scope of horticulture?
C · Sericulture
Sericulture (silk farming) is not part of horticulture; it belongs to sericulture or animal husbandry, while floriculture, pomology, and olericulture are branches of horticulture.
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Which branch of horticulture deals with the cultivation of vegetables?
B · Olericulture
Olericulture is the branch of horticulture concerned with the cultivation of vegetables.
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Which of the following best explains the importance of horticulture in agriculture?
B · It contributes to nutritional security and improves farmers’ income
Horticulture plays a vital role in providing diverse nutritious food and enhancing farmers’ income through high-value crops.
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Which of the following is an economic benefit of horticulture?
B · Increased export earnings through fruits and flowers
Horticulture contributes significantly to the economy by generating export earnings through fruits, vegetables, and flowers.
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Which statement best describes the relationship between horticulture and agriculture?
A · Horticulture is a sub-discipline of agriculture focusing on high-value crops
Horticulture is considered a specialized branch of agriculture that focuses on fruits, vegetables, flowers, and other high-value crops.
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Which of the following branches of horticulture deals with the study and cultivation of fruit crops?
A · Pomology
Pomology is the branch of horticulture that focuses on the study and cultivation of fruit crops.
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Which of the following is a key role of horticulture in sustainable agriculture?
B · Enhancing biodiversity and soil health through diverse cropping
Horticulture promotes sustainable agriculture by enhancing biodiversity, improving soil health, and supporting eco-friendly practices.
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Which of the following is NOT considered a branch of horticulture?
C · Sericulture
Sericulture involves silk production and is not a branch of horticulture, which focuses on plant cultivation.
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Which of the following best illustrates the economic significance of horticulture?
B · Horticulture products contribute to foreign exchange earnings
Horticulture products such as fruits and flowers are important for foreign exchange earnings and rural employment.
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Which of the following best describes the scope of horticulture in relation to medicinal plants?
B · Horticulture includes cultivation and processing of medicinal plants
Horticulture includes the cultivation, processing, and marketing of medicinal plants as part of its scope.
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How does horticulture contribute to environmental sustainability?
B · By increasing plant diversity and improving soil conservation
Horticulture promotes environmental sustainability by increasing plant diversity and supporting soil and water conservation practices.
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Which of the following is a major economic advantage of horticulture over traditional agriculture?
B · Higher returns per unit area
Horticultural crops generally provide higher economic returns per unit area compared to traditional field crops.
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Which of the following best explains why horticulture is considered a specialized branch of agriculture?
B · It deals with high-value crops requiring intensive management
Horticulture is specialized because it involves high-value crops like fruits and flowers that require intensive care and management.
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Which of the following is a hard-level question on the scope of horticulture?
D · Which horticultural practice improves soil fertility through nitrogen fixation?
Understanding how horticultural practices contribute to soil fertility through nitrogen fixation requires application and analysis, making it a hard-level question.
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Which of the following best describes the role of horticulture in sustainable agriculture?
B · Promoting crop diversity and reducing environmental degradation
Horticulture supports sustainable agriculture by promoting crop diversity and environmentally friendly practices.
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Which of the following best explains the importance of horticulture in improving farmers’ income?
B · Horticulture crops have short gestation periods and high market value
Horticultural crops often have short gestation periods and fetch high prices in the market, thus improving farmers’ income.
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Which of the following statements about the economic significance of horticulture is TRUE?
B · Horticulture products have a high export potential
Horticulture products like fruits and flowers have high export potential, contributing significantly to the economy.
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Which of the following best describes the relationship between horticulture and agriculture in terms of crop diversity?
B · Horticulture increases crop diversity by including fruits, vegetables, and flowers
Horticulture increases crop diversity by including a wide range of fruits, vegetables, and ornamental plants within agriculture.
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Which branch of horticulture focuses on the cultivation of ornamental plants for aesthetic purposes?
B · Floriculture
Floriculture is the branch of horticulture concerned with the cultivation of flowers and ornamental plants.
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Which of the following best defines horticultural crops?
B · Crops cultivated mainly for aesthetic, nutritional, and medicinal purposes
Horticultural crops are cultivated mainly for their aesthetic value, nutritional benefits, and medicinal properties, distinguishing them from field crops grown for fiber or fuel.
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Which of the following is NOT a primary category in the classification of horticultural crops?
C · Cereal crops
Cereal crops are field crops and not classified under horticultural crops, which mainly include fruit, vegetable, flower, spice, and medicinal plants.
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Which criterion is primarily used to classify horticultural crops?
B · Economic value and usage
Horticultural crops are classified based on their economic value and usage such as food, ornamental, medicinal, or spice purposes.
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Which of the following is a botanical characteristic used in classification of horticultural crops?
A · Type of root system
Botanical classification often considers root system types (taproot, fibrous) among other morphological traits to classify crops.
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Which of the following correctly arranges horticultural crop categories from food to non-food uses?
A · Fruit crops → Vegetable crops → Flower crops → Medicinal plants
Fruit and vegetable crops are primarily food crops, followed by flower crops for ornamental use and medicinal plants for therapeutic use.
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Which of the following is an example of a climacteric fruit crop?
A · Banana
Banana is a climacteric fruit that continues to ripen after harvesting due to ethylene production.
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Which fruit crop is primarily grown for its high vitamin C content?
A · Orange
Orange is well known for its high vitamin C content, making it a valuable fruit crop nutritionally.
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Which of the following fruits is classified as a drupe?
A · Peach
Peach is a drupe fruit characterized by a fleshy outer part surrounding a hard stone or pit.
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Which fruit crop requires cross-pollination for better fruit set?
A · Apple
Apple trees generally require cross-pollination from different cultivars to ensure good fruit set.
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Which of the following is classified as a leafy vegetable crop?
A · Spinach
Spinach is a leafy vegetable where the leaves are consumed.
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Which vegetable crop is a root vegetable?
A · Carrot
Carrot is a root vegetable where the edible part is the taproot.
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Which vegetable crop is classified as a fruit vegetable botanically?
A · Tomato
Tomato is botanically a fruit because it develops from the ovary of a flower and contains seeds.
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Which of the following vegetable crops is classified as a legume?
A · Pea
Pea is a leguminous vegetable crop that fixes nitrogen and produces pods.
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Which flower crop is commonly used for making garlands in India?
A · Jasmine
Jasmine flowers are highly fragrant and commonly used in garlands and religious offerings in India.
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Which of the following flower crops is an example of an annual plant?
A · Marigold
Marigold completes its life cycle within one year, classifying it as an annual flower crop.
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Which flower crop is known for its use in essential oil production?
A · Rose
Rose flowers are widely used in the production of essential oils for perfumes and cosmetics.
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Which flower crop is classified as a perennial and is widely grown for cut flowers?
A · Rose
Rose is a perennial flower crop extensively cultivated for cut flowers in floriculture.
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Which spice is obtained from the dried stigma of a flower?
A · Saffron
Saffron is derived from the dried stigmas of the Crocus flower.
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Which spice is derived from the bark of a tree?
A · Cinnamon
Cinnamon is obtained from the inner bark of trees belonging to the genus Cinnamomum.
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Which of the following spices is a dried flower bud?
A · Clove
Clove is the dried flower bud of the Syzygium aromaticum tree.
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Which spice is known as the "King of Spices" and is a dried fruit?
A · Black Pepper
Black pepper is called the "King of Spices" and is obtained from dried peppercorn fruits.
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Which medicinal plant is commonly used for its anti-inflammatory properties?
A · Turmeric
Turmeric contains curcumin, which has potent anti-inflammatory effects.
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Which medicinal plant is known for its antimicrobial and antiseptic properties and is widely used in skin treatments?
A · Neem
Neem has antimicrobial and antiseptic properties and is used in various skin care products.
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Which medicinal plant is traditionally used to boost immunity and respiratory health?
A · Tulsi
Tulsi (Holy Basil) is known for its immunomodulatory and respiratory benefits.
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Which medicinal plant is used externally for wound healing and skin soothing?
A · Aloe vera
Aloe vera gel is widely used for its wound healing and skin soothing properties.
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Which of the following is the correct basis for the classification of horticultural crops?
C · Based on the part of the plant used
Horticultural crops are classified primarily based on the part of the plant that is used, such as fruits, vegetables, flowers, spices, and medicinal parts.
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Which of the following is NOT a major category in the classification of horticultural crops?
B · Cereal crops
Cereal crops are classified under field crops, not horticultural crops. The main horticultural categories include fruit crops, vegetable crops, flower crops, spices, and medicinal plants.
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Which characteristic is typical of fruit crops in horticulture?
B · They produce fleshy or dry edible fruits
Fruit crops are grown mainly for their edible fruits, which can be fleshy or dry, such as mango, apple, or nuts.
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Which of the following is a characteristic feature of vegetable crops?
B · They are grown for their edible parts like leaves, stems, or roots
Vegetable crops are cultivated for their edible parts such as leaves (spinach), stems (asparagus), roots (carrot), or fruits (tomato).
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Which of the following flower crops is primarily grown for cut flowers?
B · Rose
Rose is widely grown as a cut flower crop due to its long vase life and commercial demand.
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Which spice is obtained from the dried stigma of the flower Crocus sativus?
B · Saffron
Saffron is derived from the dried stigmas of Crocus sativus flowers and is a valuable spice.
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Which medicinal plant is known for its use in treating digestive disorders and is commonly called 'Aloe Vera'?
B · Aloe barbadensis
Aloe barbadensis, commonly known as Aloe Vera, is widely used for its medicinal properties, especially in treating digestive and skin disorders.
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Which of the following is a hard-level question on classification of horticultural crops?
C · Classification based on the economic value of the crop
Classification based on economic value is a more complex approach and less commonly used compared to classification based on plant parts or life cycle.
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Which fruit crop is classified as a drupe?
B · Mango
Mango is a drupe fruit characterized by a fleshy outer part surrounding a single seed enclosed in a hard endocarp.
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Which vegetable crop is classified as a root vegetable?
B · Carrot
Carrot is a root vegetable where the edible part is the root.
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Which flower crop is known for its use in essential oil extraction and is classified as a herbaceous perennial?
C · Lavender
Lavender is a herbaceous perennial flower crop widely cultivated for essential oil extraction.
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Which spice is obtained from the dried flower buds of Syzygium aromaticum?
A · Clove
Clove is obtained from the dried flower buds of Syzygium aromaticum and is used as a spice and for medicinal purposes.
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Which medicinal plant is commonly used as an adaptogen and is known as Ashwagandha?
A · Withania somnifera
Withania somnifera, or Ashwagandha, is used as an adaptogen to help the body resist stress.
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Which of the following is NOT a typical use of fruit crops in horticulture?
C · Used as spices
Fruit crops are not typically used as spices; spices are derived from other plant parts such as seeds, bark, or flower buds.
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Which vegetable crop is classified as a leafy vegetable?
A · Spinach
Spinach is a leafy vegetable grown for its edible leaves.
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Which flower crop is widely used in garland making and has a strong fragrance?
A · Jasmine
Jasmine is famous for its fragrance and is commonly used in garlands and religious ceremonies.
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Which spice is derived from the dried seed pods of Elettaria cardamomum?
A · Cardamom
Cardamom is obtained from the dried seed pods of Elettaria cardamomum and is used as a spice and flavoring agent.
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Which medicinal plant is known for its neem oil used in pest control and medicinal applications?
A · Azadirachta indica
Azadirachta indica, commonly known as neem, produces neem oil used for pest control and medicinal purposes.
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Which of the following flower crops is classified as an ornamental shrub rather than an herbaceous plant?
B · Rose
Rose is an ornamental shrub, whereas marigold and chrysanthemum are herbaceous plants.
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Assertion (A): Spices derived from seeds generally require sexual propagation for commercial cultivation.
Reason (R): Seed-derived spices maintain genetic uniformity better than those propagated vegetatively.
D · A is false, but R is true
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Which of the following combinations correctly pairs a horticultural crop with its classification, primary economic product, and the most suitable propagation method to maintain genetic fidelity?
A · Banana - Fruit crop - Fruit - Tissue culture
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Which of the following horticultural crops is correctly paired with its classification, primary economic product, and a propagation method that overcomes seed dormancy and ensures rapid multiplication?
A · Orchid; flower crop; flower; tissue culture
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Which of the following best describes sexual propagation in plants?
A · Propagation through seeds formed by fertilization
Sexual propagation involves the formation of new plants through seeds produced by fertilization of male and female gametes.
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What is the primary advantage of sexual propagation over asexual propagation?
C · Generates genetic variation in offspring
Sexual propagation results in genetic recombination, producing genetically diverse offspring, which is beneficial for adaptation and breeding.
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Which of the following is NOT a characteristic of sexual propagation?
B · Offspring are genetically identical to the parent
Sexual propagation results in genetically varied offspring, not genetically identical ones, which is a feature of asexual propagation.
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In which scenario is sexual propagation preferred over asexual propagation?
C · When breeding for new varieties
Sexual propagation is preferred for breeding new varieties due to genetic recombination and variation.
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Which of the following is the most challenging aspect of sexual propagation in horticulture?
A · Obtaining viable seeds
Obtaining viable seeds can be challenging due to factors like seed dormancy, poor pollination, or seed viability issues.
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Asexual propagation in plants is characterized by which of the following?
B · Production of genetically identical offspring
Asexual propagation produces clones of the parent plant, resulting in genetically identical offspring.
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Which of the following is a common method of asexual propagation?
B · Grafting
Grafting is a widely used asexual propagation technique involving joining parts of two plants.
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Which of the following is NOT an advantage of asexual propagation?
C · Generates genetic diversity
Asexual propagation does not generate genetic diversity; it produces clones identical to the parent.
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Which statement correctly differentiates sexual and asexual propagation?
C · Sexual propagation involves seeds; asexual uses vegetative parts
Sexual propagation involves seed formation through fertilization, while asexual uses vegetative parts without fertilization.
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Which of the following is a limitation of asexual propagation methods?
B · Loss of genetic variability
Asexual propagation produces genetically identical plants, reducing genetic variability which may limit adaptability.
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Vegetative propagation is best described as:
C · A form of asexual propagation using plant parts
Vegetative propagation is asexual and involves using vegetative parts like stems, roots, or leaves to produce new plants.
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Which of the following techniques is NOT a form of vegetative propagation?
D · Seed sowing
Seed sowing is sexual propagation, not vegetative propagation.
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Refer to the diagram below illustrating vegetative propagation methods. Which method is represented by the part labeled 'A' showing a stem cutting with roots developing?
B · Cuttings
The diagram shows a stem cutting with roots developing, which is characteristic of the cutting method.
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Which of the following is an advantage of vegetative propagation?
B · Ensures rapid multiplication of true-to-type plants
Vegetative propagation allows rapid multiplication of plants that are genetically identical to the parent, maintaining desirable traits.
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Which of the following best defines cuttings as a propagation method?
B · Detaching a plant part to develop roots and grow independently
Cuttings involve detaching a part of the plant, such as stem or leaf, which then develops roots and grows into a new plant.
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Which factor is most critical for successful rooting in stem cuttings?
B · High humidity and proper temperature
High humidity and optimal temperature promote root initiation and growth in stem cuttings.
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Refer to the diagram below showing a stem cutting. Which part is essential for rooting to occur?
B · Node
The node contains meristematic tissue necessary for root initiation in cuttings.
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Which of the following is a key advantage of grafting over other vegetative propagation methods?
B · It allows combining desirable traits of two plants
Grafting allows the combination of rootstock and scion traits, such as disease resistance and fruit quality.
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Which of the following grafting techniques involves joining a scion to a rootstock by making a slanting cut on both and fitting them together?
B · Whip and tongue grafting
Whip and tongue grafting uses matching slanting cuts with a tongue to increase contact and stability.
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Refer to the diagram below showing a graft union. What is the main purpose of the cambium layer alignment in grafting?
B · To ensure vascular connection for nutrient flow
Proper alignment of cambium layers allows the grafted parts to fuse and establish vascular connections for transport of water and nutrients.
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Which of the following is a limitation of grafting as a propagation method?
B · It requires compatible plant species
Grafting requires compatibility between rootstock and scion; incompatible combinations fail to unite.
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Layering as a propagation method involves:
B · Bending a stem to the ground and inducing roots while attached
Layering involves bending a stem to the ground or another medium and encouraging root formation while it remains attached to the parent plant.
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Which of the following is a common type of layering used for plants with flexible stems?
C · Simple layering
Simple layering is used for flexible stems by bending them to the ground and covering a portion with soil to root.
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Refer to the diagram below illustrating the layering process. What is the purpose of the part labeled 'B' where the stem is buried in soil?
B · To induce root formation at the buried section
Burying the stem section in soil stimulates root formation at that point, enabling the new plant to develop.
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Which of the following is a disadvantage of layering compared to other vegetative propagation methods?
B · Takes longer time for new plant establishment
Layering generally takes longer for root formation and establishment compared to cuttings or grafting.
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Which of the following best describes sexual propagation in plants?
A · Propagation through seeds formed by fertilization
Sexual propagation involves the formation of new plants through seeds produced by fertilization, combining genetic material from two parents.
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Which of the following is a key advantage of sexual propagation over asexual propagation?
C · Generates genetic variation in offspring
Sexual propagation results in genetic recombination, producing offspring with genetic variation, which is beneficial for adaptability.
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Which of the following is NOT a characteristic of sexual propagation?
B · Offspring are genetically identical to parent
Sexual propagation produces genetically varied offspring, not identical clones.
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In sexual propagation, which plant part is primarily involved in the formation of new plants?
A · Seeds
Sexual propagation involves seeds formed after fertilization as the main propagules for new plants.
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Which of the following scenarios best illustrates sexual propagation in horticulture?
A · Sowing tomato seeds collected from ripe fruits
Sowing seeds collected from fruits is an example of sexual propagation, involving fertilized seeds.
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Asexual propagation differs from sexual propagation because it:
B · Produces genetically identical plants
Asexual propagation produces clones genetically identical to the parent plant as it does not involve fertilization.
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Which of the following is a common method of asexual propagation?
B · Grafting
Grafting is a widely used asexual propagation method where tissues of two plants are joined to grow as one.
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Which of the following is NOT an advantage of asexual propagation?
C · Generation of new genetic combinations
Asexual propagation does not generate genetic variation; it produces clones identical to the parent.
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Which asexual propagation method involves joining a scion to a rootstock?
B · Grafting
Grafting involves joining a scion (shoot) onto a rootstock to combine desirable traits.
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Which of the following best defines vegetative propagation?
B · Propagation using vegetative parts like stems, roots, or leaves
Vegetative propagation is a type of asexual propagation using vegetative parts such as stems, roots, or leaves to produce new plants.
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Which of the following is NOT a vegetative propagation method?
C · Seed sowing
Seed sowing is sexual propagation, not vegetative propagation.
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Which vegetative propagation method involves rooting a detached stem or leaf to produce a new plant?
B · Cuttings
Cuttings involve rooting a detached stem or leaf to develop a new plant.
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Which of the following statements about vegetative propagation is true?
C · It allows rapid multiplication of plants
Vegetative propagation allows rapid multiplication of plants as it bypasses seed formation and juvenile phases.
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Refer to the diagram below showing a stem cutting method. Which part of the plant is used for propagation in this method?
B · Stem
Stem cuttings use a portion of the stem to produce new plants by rooting.
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Which of the following is a disadvantage of propagation by cuttings?
C · Risk of disease transmission
Cuttings can transmit diseases from the parent plant to the new plants since they are clones.
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Which of the following best describes grafting?
B · Joining a scion to a rootstock to combine traits
Grafting involves joining a scion (shoot) onto a rootstock to combine desirable characteristics of both plants.
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Refer to the diagram below illustrating a graft union. What is the main purpose of grafting in horticulture?
B · To combine disease resistance with high yield
Grafting combines desirable traits such as disease resistance from rootstock with high yield from scion.
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Which of the following is NOT a type of grafting?
C · Layering grafting
Layering is a separate propagation method and not a type of grafting.
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Which layering method involves bending a low-growing branch to the ground and covering part of it with soil to encourage rooting?
C · Simple layering
Simple layering involves bending a branch to the ground and covering it with soil to root.
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Refer to the diagram below showing the layering process. What is the primary benefit of layering compared to cuttings?
B · Layering allows rooting while the branch is still attached
Layering allows roots to develop on the branch while it is still attached to the parent plant, improving survival.
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Which of the following is a disadvantage of layering as a propagation method?
B · Limited number of plants produced per season
Layering produces fewer plants per season compared to other methods like cuttings or grafting.
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What is vegetative propagation in horticulture?
B · Asexual reproduction using plant parts other than seeds
Vegetative propagation is a form of asexual reproduction where new plants are produced from parts of the parent plant such as stems, roots, or leaves without involving seeds.
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Which of the following is a significant advantage of vegetative propagation?
B · Ensures uniformity and true-to-type plants
Vegetative propagation produces clones of the parent plant, ensuring uniformity and true-to-type characteristics, which is a major advantage over sexual propagation.
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Which statement best describes the significance of vegetative propagation in horticulture?
C · It allows rapid multiplication of disease-free plants
Vegetative propagation enables rapid multiplication of plants, often producing disease-free and uniform plants, which is crucial for commercial horticulture.
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Which of the following is NOT a method of vegetative propagation?
D · Pollination
Pollination is a sexual reproduction process and is not a method of vegetative (asexual) propagation.
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Which type of cutting involves using a piece of stem with a single node and a leaf?
C · Node cutting
Node cutting involves using a stem piece containing a single node and a leaf, which can develop roots and shoots to form a new plant.
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Which of the following is a limitation of propagation by cuttings?
C · Limited to plants that root easily from cuttings
Cuttings are limited to plants that can root easily from stem, leaf, or root cuttings; plants that do not root well cannot be propagated effectively by this method.
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What is the correct sequence of steps in stem cutting propagation?
A · Select cutting → Treat with rooting hormone → Plant in medium → Provide shade
The correct procedure is to select healthy cuttings, treat them with rooting hormone to promote root formation, plant them in a suitable medium, and provide shade to reduce transpiration.
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Which type of cutting is commonly used for plants like rose and hibiscus?
C · Softwood cutting
Softwood cuttings, taken from young, soft shoots, are commonly used for plants like rose and hibiscus for easy rooting.
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Which of the following is an advantage of propagation by cuttings?
B · Requires less time to produce mature plants
Propagation by cuttings produces mature plants faster than seed propagation because the cutting is already a part of a mature plant.
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Which of the following is NOT a type of grafting?
D · Layer grafting
Layer grafting is not a recognized type of grafting; layering is a separate vegetative propagation method.
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Refer to the diagram below showing the steps of whip and tongue grafting. Which part is labeled as the 'tongue' in the scion and stock?
C · The interlocking slanting cut on both scion and stock
In whip and tongue grafting, the 'tongue' refers to the interlocking slanting cuts on both the scion and stock which help in firm attachment.
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Which factor is most critical for successful grafting?
A · Genetic compatibility between stock and scion
Genetic compatibility between the stock and scion is essential for successful graft union formation and growth.
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Which of the following is a common application of grafting in horticulture?
C · Producing rootstocks resistant to soil-borne diseases
Grafting is used to combine a scion with a rootstock that is resistant to soil-borne diseases, improving plant health and productivity.
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Which grafting method is best suited for young seedlings with thin stems?
B · Whip and tongue grafting
Whip and tongue grafting is ideal for young seedlings with thin stems because it provides a strong union with good cambial contact.
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Which of the following best differentiates budding from grafting?
A · Budding uses a bud as scion; grafting uses a stem segment
Budding involves inserting a single bud from the scion onto the rootstock, whereas grafting uses a stem segment containing multiple buds.
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Which of the following is a common method of budding?
A · T-budding
T-budding is a common budding method where a T-shaped cut is made on the rootstock to insert the bud.
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Which of the following is an advantage of budding over grafting?
C · Requires less scion material and is quicker
Budding requires only a single bud from the scion, making it more economical and quicker compared to grafting which requires a larger scion segment.
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Which of the following plants is commonly propagated by budding?
D · Citrus
Citrus plants are commonly propagated by budding due to the ease of bud union and rapid multiplication.
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Refer to the diagram below of T-budding. What is the purpose of the horizontal cut in the rootstock bark?
B · To insert the scion bud
The horizontal cut in T-budding allows the bark to be lifted so the bud shield can be inserted, ensuring cambial contact for successful union.
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Which type of layering involves bending a branch to the ground and burying a portion of it while still attached to the parent plant?
C · Simple layering
Simple layering involves bending a branch to the ground and burying a part of it while it remains attached to the parent plant to develop roots.
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Which of the following is a benefit of layering over cuttings?
B · Can be done on plants that do not root easily from cuttings
Layering is beneficial for plants that root poorly from cuttings because the branch remains attached to the parent plant, receiving nutrients during root formation.
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Which of the following plants is most suitable for mound layering?
A · Blackberry
Blackberry is commonly propagated by mound layering where shoots are cut back and new shoots are buried to induce rooting.
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Refer to the diagram below illustrating serpentine layering. What is the main advantage of this method?
A · Multiple plants can be produced from a single branch
Serpentine layering allows multiple shoots along a single branch to be buried and rooted, producing several plants simultaneously.
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Which of the following is NOT an advantage of layering?
D · Produces genetically variable offspring
Layering produces clones of the parent plant, so offspring are genetically identical, not variable.
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Which principle is the basis of plant tissue culture propagation?
B · Asexual reproduction from totipotent cells
Plant tissue culture is based on the principle of totipotency, where a single plant cell can regenerate into a whole plant under suitable conditions.
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Which of the following is the correct order of steps in plant tissue culture?
A · Inoculation → Multiplication → Rooting → Hardening
The correct sequence is inoculation of explants in culture medium, multiplication of shoots, rooting of shoots, and finally hardening of plantlets before transfer to soil.
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Which of the following is NOT an advantage of tissue culture propagation?
C · Requires large land area for propagation
Tissue culture requires relatively small space compared to traditional propagation methods, making it efficient for mass production.
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Which crop is widely propagated commercially using tissue culture?
A · Banana
Banana is commonly propagated by tissue culture commercially to produce disease-free and uniform planting material.
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Refer to the schematic diagram below of the tissue culture process. Which stage is represented by the step labeled 'Callus formation'?
C · Induction of undifferentiated cell mass
Callus formation is the induction of an undifferentiated mass of cells from the explant, which can later differentiate into shoots or roots.
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Which of the following is a critical factor for contamination control in tissue culture labs?
B · Sterilization of explants and media
Sterilization of explants and culture media is essential to prevent microbial contamination in tissue culture.
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Which of the following best defines vegetative propagation in horticulture?
C · Asexual reproduction using plant parts other than seeds
Vegetative propagation is a form of asexual reproduction where new plants are produced from vegetative parts like stems, roots, or leaves without involving seeds.
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Which of the following is NOT an advantage of vegetative propagation?
C · Increases genetic diversity
Vegetative propagation produces clones and does not increase genetic diversity, unlike sexual reproduction.
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In vegetative propagation, which plant part is commonly used for producing new plants through layering?
B · Stem
Layering involves bending a stem to the ground and encouraging it to root while still attached to the parent plant.
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Which of the following statements about vegetative propagation is TRUE?
B · It results in offspring genetically identical to the parent
Vegetative propagation produces clones that are genetically identical to the parent plant.
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Which of the following is a limitation of vegetative propagation?
B · Susceptibility to diseases due to lack of genetic diversity
Since vegetative propagation produces genetically identical plants, they may be uniformly susceptible to diseases and pests.
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Which type of cutting involves using a piece of root to propagate a new plant?
C · Root cutting
Root cutting uses a portion of root to develop a new plant, commonly used in plants like sweet potato.
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Refer to the diagram below showing different types of cuttings. Which type of cutting is labeled as 'B' where a leaf with petiole is used?
B · Leaf-bud cutting
Leaf-bud cutting involves a leaf with a bud and petiole, allowing the bud to develop into a new shoot.
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Which factor is most critical for successful rooting in stem cuttings?
B · Presence of auxins and adequate moisture
Auxins promote root initiation and adequate moisture prevents desiccation, both essential for rooting.
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Which of the following is a disadvantage of propagation by cuttings?
C · Limited to plants that root easily
Cuttings are effective only in plants capable of rooting easily; some species do not root well from cuttings.
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Which grafting method involves joining a scion to a rootstock by making a diagonal cut on both parts and joining them?
B · Whip and tongue grafting
Whip and tongue grafting involves diagonal cuts with tongues on scion and rootstock to increase contact area and stability.
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Refer to the diagram below illustrating grafting techniques. Which grafting method is shown where the rootstock is split and the scion inserted into the cleft?
B · Cleft grafting
Cleft grafting involves splitting the rootstock and inserting the scion into the cleft for union.
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Which of the following is NOT a requirement for successful grafting?
C · Use of mature seeds
Seeds are not involved in grafting; mature seeds are irrelevant to grafting success.
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Which grafting method is most suitable for fruit trees with thick bark during the growing season?
B · Budding
Budding is preferred for thick bark trees during the growing season as it involves inserting a single bud under the bark.
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Which of the following is a major advantage of grafting in horticulture?
B · Allows combination of desirable rootstock and scion traits
Grafting allows combining rootstock with good root system and scion with desirable fruit quality.
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In budding, what is the term for the small piece of bark containing a bud that is inserted into the rootstock?
B · Bud eye
The bud eye is the bud-containing piece of bark used in budding.
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Refer to the diagram below showing the T-budding method. What does the horizontal cut labeled 'A' represent?
B · Horizontal incision to insert the bud
In T-budding, the horizontal cut is made to insert the bud under the bark flap.
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Which of the following is an advantage of budding over grafting?
B · Requires less scion material
Budding requires only a single bud, making it more economical in scion material than grafting.
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Which of the following is a limitation of budding as a propagation method?
B · Requires active growth phase for success
Budding is best done during the active growth phase when the bark slips easily for insertion of the bud.
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Which layering method involves bending a stem to the ground and burying a portion while the tip remains above soil?
C · Simple layering
Simple layering involves bending a single stem to the ground and burying a part to induce rooting.
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Refer to the diagram below showing different layering methods. Which method is depicted where multiple shoots are cut back to ground level and new shoots are buried in soil?
A · Mound layering
Mound layering involves cutting shoots to ground level and burying the new shoots to root.
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Which of the following is a key advantage of layering over cuttings?
B · Higher success rate due to continued nutrient supply
Layering allows the stem to remain attached to the parent plant, ensuring continuous nutrient supply and better rooting success.
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Which layering method is most suitable for plants with flexible stems that root easily at the tip?
A · Tip layering
Tip layering involves burying the tip of a flexible stem to induce rooting, commonly used in blackberry.
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Which of the following is NOT a step in the tissue culture process?
C · Pollination of flowers
Pollination is a sexual reproduction process and is not part of tissue culture, which is an asexual propagation technique.
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Refer to the diagram below showing the tissue culture process flow. Which stage follows the 'Culture initiation' step?
B · Multiplication
After culture initiation, the explants multiply to form multiple shoots or callus.
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Which plant growth regulator is commonly used to induce shoot multiplication in tissue culture?
B · Cytokinin (BAP)
Cytokinins like BAP promote cell division and shoot proliferation in tissue culture.
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Which of the following is a major advantage of tissue culture over traditional propagation methods?
B · Produces large numbers of disease-free plants rapidly
Tissue culture allows rapid multiplication of disease-free plants under sterile conditions.
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Which of the following is a challenge commonly faced in tissue culture propagation?
B · Contamination by microorganisms
Contamination by bacteria or fungi is a major challenge in tissue culture requiring strict aseptic techniques.
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In tissue culture, what is the purpose of the hardening stage?
B · To acclimatize plantlets to external environment
Hardening acclimatizes tissue culture plantlets to external conditions before transplanting to soil.
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Which of the following is the primary objective of nursery management in horticulture?
A · To produce healthy and uniform planting material
The main goal of nursery management is to produce healthy, uniform, and quality planting material for transplantation.
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Which factor is NOT essential for effective nursery site selection?
C · High altitude above 3000 meters
High altitude above 3000 meters is generally not suitable for nursery sites due to harsh climatic conditions.
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Which of the following nursery practices helps in preventing soil-borne diseases?
A · Use of sterilized soil or media
Using sterilized soil or media reduces the presence of pathogens and prevents soil-borne diseases in nursery beds.
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Refer to the diagram below showing a typical nursery layout. Which section is designated for hardening of seedlings before transplantation?
B · Section B with open sunlight exposure
Hardening involves exposing seedlings to open sunlight to acclimatize them before transplantation.
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Which of the following is a critical step in seedling production to ensure uniform germination?
A · Seed pretreatment such as soaking or scarification
Seed pretreatment like soaking or scarification breaks seed dormancy and promotes uniform germination.
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Which seedling production method is most suitable for plants with recalcitrant seeds that cannot be dried or stored for long?
A · Raising seedlings in polybags
Polybag nursery allows raising seedlings from recalcitrant seeds that require immediate planting and controlled conditions.
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Which of the following is NOT a stage in seedling growth illustrated in the diagram below?
C · Flowering
Flowering is not a seedling stage; it occurs later in the plant's life cycle.
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Which nutrient is most critical during the early seedling production stage to promote root development?
A · Phosphorus
Phosphorus is essential for root development and early seedling growth.
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Which of the following is NOT considered a type of planting material in horticulture?
D · Fertilizers
Fertilizers are inputs for plant nutrition, not planting material.
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Which planting material is preferred for maintaining genetic purity in fruit crops?
A · Grafting
Grafting preserves the genetic characteristics of the parent plant, ensuring true-to-type progeny.
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Which of the following planting materials is most suitable for rapid propagation of disease-free plants in large quantities?
A · Tissue culture plantlets
Tissue culture allows rapid multiplication of disease-free plants in controlled conditions.
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Which of the following is a disadvantage of using seed as planting material in horticultural crops?
A · Genetic variability in progeny
Seeds often produce genetically variable offspring, which is undesirable for uniformity in horticulture.
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Which of the following is the most important parameter in quality control of planting material?
A · Genetic purity
Genetic purity ensures that the planting material is true to type and free from undesirable traits.
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Refer to the quality grading chart below for planting material. Which grade corresponds to planting material with >90% germination and free from pests and diseases?
A · Grade A
Grade A planting material meets the highest standards including >90% germination and pest-free status.
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Which of the following methods is commonly used for quality control of planting material in nurseries?
A · Visual inspection and germination tests
Visual inspection and germination tests help ensure planting material meets quality standards.
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Which of the following is a critical factor for maintaining quality during storage of planting material?
A · Temperature and humidity control
Proper temperature and humidity control prevent deterioration and maintain viability of planting material.
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Which of the following is the best practice to ensure genetic purity in planting material production?
A · Using certified seeds and mother plants
Certified seeds and mother plants ensure genetic purity and true-to-type planting material.
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Which nursery management practice helps in reducing seedling mortality due to water stress?
A · Hardening of seedlings
Hardening acclimatizes seedlings to external conditions, reducing mortality due to water stress.
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Which of the following is a disadvantage of raising seedlings in polybags compared to open nursery beds?
A · Higher initial cost and labor
Polybag nurseries require higher initial investment and labor compared to open beds.
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Which of the following is NOT a common method of vegetative propagation used as planting material in horticulture?
C · Seed sowing
Seed sowing is sexual propagation, not vegetative (asexual) propagation.
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Which of the following quality parameters is LEAST important when selecting planting material for disease resistance?
C · Seed size
Seed size does not directly indicate disease resistance.
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Which of the following is a fundamental principle of nursery management to ensure healthy seedling growth?
B · Maintaining proper sanitation and hygiene
Maintaining proper sanitation and hygiene is essential in nursery management to prevent disease and promote healthy seedling growth.
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What is the ideal seedbed preparation technique for nursery seedling production?
B · Loosening the soil and incorporating organic matter
Loosening the soil and incorporating organic matter improves aeration, moisture retention, and nutrient availability for seedlings.
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Which nursery management practice helps in reducing seedling mortality during transplantation?
B · Hardening seedlings by gradually exposing them to external conditions
Hardening seedlings by gradually exposing them to external conditions strengthens them and reduces mortality during transplantation.
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Which of the following is NOT a key factor in effective nursery management?
C · Neglecting seedling spacing
Neglecting seedling spacing leads to overcrowding and poor growth; hence it is not a key factor in effective nursery management.
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In nursery management, why is shading important during the initial stages of seedling growth?
B · To protect seedlings from direct sunlight and reduce water loss
Shading protects tender seedlings from harsh sunlight and reduces transpiration, helping in better establishment.
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Which seedling production technique involves growing seedlings in containers filled with a sterile medium?
C · Pot culture or container seedling production
Pot culture uses containers with sterile media to produce healthy seedlings with controlled root growth.
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Which of the following is a common method to break seed dormancy in nursery seedling production?
A · Cold stratification
Cold stratification involves exposing seeds to low temperatures to break dormancy and promote germination.
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Which seedling production technique is best suited for plants with recalcitrant seeds that cannot be stored for long?
B · Vegetative propagation methods like cuttings
Recalcitrant seeds lose viability quickly; hence vegetative propagation like cuttings is preferred for seedling production.
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Which of the following is an advanced seedling production technique that uses nutrient solutions instead of soil?
A · Hydroponics
Hydroponics is a soil-less technique where seedlings are grown in nutrient-rich water solutions.
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Which seedling production technique requires the use of sterilized soil or media to prevent pathogen infection?
C · Container or pot culture seedling production
Container seedling production uses sterilized media to reduce disease incidence and promote healthy growth.
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What is the primary source of vegetative planting material in horticulture nurseries?
B · Cuttings, grafts, and suckers
Vegetative planting materials include cuttings, grafts, and suckers used to propagate plants clonally.
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Which of the following is considered a true-to-type planting material source ensuring genetic uniformity?
B · Cuttings from elite mother plants
Cuttings from elite mother plants maintain genetic uniformity and true-to-type characteristics.
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Which planting material type is most suitable for mass propagation of fruit crops with complex seed dormancy?
B · Grafted plants
Grafted plants combine rootstock and scion traits and are widely used for fruit crops with seed dormancy issues.
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Which of the following is a disadvantage of using seed as planting material in horticulture nurseries?
A · Genetic variability among seedlings
Seeds often produce genetically variable offspring, leading to non-uniform plants.
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Which quality control measure ensures the genetic purity of planting material in nurseries?
A · Using certified seeds and registered mother plants
Using certified seeds and registered mother plants maintains genetic purity and quality of planting material.
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Which of the following is a standard test for assessing seed viability in quality control?
A · Germination test
Germination test measures the percentage of seeds that can germinate, indicating viability.
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Which of the following nursery practices helps maintain the health quality of planting material by reducing disease incidence?
A · Using disease-free certified planting material
Using disease-free certified planting material reduces the risk of introducing pathogens into the nursery.
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Refer to the quality grading chart below. Which grade of planting material is suitable for commercial nursery production?
A · Grade A - High vigor, uniform size, disease-free
Grade A planting material meets the highest standards for vigor, uniformity, and health, suitable for commercial use.
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Which of the following is NOT an essential component of nursery infrastructure?
C · Heavy machinery for plowing
Heavy machinery for plowing is not essential in nursery infrastructure, which focuses on seedling care and management.
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Which tool is commonly used for preparing seedbeds in a nursery?
A · Hoe
A hoe is used to loosen and prepare seedbeds in nursery operations.
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Refer to the nursery layout diagram below. Which section is designated for hardening seedlings before transplantation?
B · Section B - Open sun exposure area
The open sun exposure area (Section B) is used for hardening seedlings by gradually exposing them to sunlight.
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Which environmental factor is most critical for seed germination in nurseries?
B · Soil moisture
Soil moisture is essential for seed imbibition and germination in nurseries.
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Which environmental condition can cause damping-off disease in nursery seedlings?
A · Excessive soil moisture and poor aeration
Excessive moisture and poor aeration create favorable conditions for damping-off pathogens.
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Which environmental factor is controlled by using shade nets in nurseries?
A · Temperature and light intensity
Shade nets reduce temperature and light intensity, protecting seedlings from stress.
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Refer to the graph below showing seedling growth under different temperature regimes. Which temperature range is optimal for seedling development?
B · 25-30°C
Seedlings generally grow best in moderate temperatures around 25-30°C.
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What is the primary purpose of hardening seedlings in nursery management?
B · To acclimatize seedlings to external environmental conditions
Hardening acclimatizes seedlings to external conditions, improving survival after transplantation.
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Which practice is involved in the hardening process of nursery seedlings?
A · Gradually reducing irrigation frequency
Reducing irrigation frequency helps seedlings develop tolerance to water stress during hardening.
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Refer to the seedling growth stages diagram below. At which stage is hardening most effectively initiated?
B · Stage 3 - Four to six true leaves
Hardening is best started when seedlings have developed four to six true leaves to ensure strength before transplantation.
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Which common pest affects nursery seedlings by feeding on young leaves and stems?
A · Aphids
Aphids suck sap from young leaves and stems, causing damage to nursery seedlings.
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Which disease is characterized by seedling wilting and root rot in nursery beds?
A · Damping-off
Damping-off causes seedling wilting and root rot, often due to fungal pathogens in wet conditions.
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Which nursery pest is controlled effectively by introducing natural predators like ladybird beetles?
A · Aphids
Ladybird beetles are natural predators of aphids and help control their population biologically.
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Refer to the diagram below showing symptoms on nursery seedlings. Which disease is indicated by white powdery growth on leaves?
A · Powdery mildew
White powdery growth on leaves is characteristic of powdery mildew disease.
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Which propagation method involves rooting a stem while it is still attached to the parent plant?
A · Layering
Layering involves rooting a stem while attached to the parent plant before detachment.
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Which propagation method is most suitable for producing large numbers of uniform plants in a short time?
A · Tissue culture
Tissue culture allows rapid multiplication of genetically uniform plants in controlled conditions.
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Which propagation method involves joining a scion onto a rootstock to combine desirable traits?
A · Grafting
Grafting joins a scion and rootstock to combine traits like disease resistance and fruit quality.
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Refer to the propagation method illustration below. Which method is depicted by the diagram showing a scion joined to a rootstock?
A · Grafting
The diagram shows grafting, where a scion is joined to a rootstock for propagation.
