Biology · Environmental Studies
Plant Reproduction and Germination
892 Questions
Plant reproduction and germination involve seed structure, cotyledon function, and dispersal mechanisms. These core botany concepts frequently appear in general science sections. Practice these questions to ensure better retention.
Seed germination typesSeed dispersal mechanismsCotyledons and albuminous seedsCryptogamic plantsPhanerogams reproduction
Plant Reproduction and Germination Questions
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Epigeal
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Hypogeal
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Vivipary
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No germination takes place in O2 deficient condition.
C
Correct answer
Explanation
Plants exhibiting vivipary grow in O2 deficient soils.
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Mustard
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Apple
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Wheat
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Melli-lotus
B
Correct answer
Explanation
Apple seeds require prolonged period of dry storage for breaking seed dormancy.
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Rapid development of embryo
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Softening of skin coat
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Diluting or removing growth inhibitor
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Inducing seed dormancy
C
Correct answer
Explanation
Leaching dilutes or removes an inhibitor from the seed.
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Tamarind
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French bean
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Castor
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Mango
C
Correct answer
Explanation
Cotyledons of castor act as green leaves after germination. They perform photosynthesis.
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To induce seed dormancy
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To break seed dormancy
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To manure the seeds
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As a pest control treatment
B
Correct answer
Explanation
The seeds of teak are put into cow dung for a long period to break dormancy.
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Respiration
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Photosynthesis
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Reproduction
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Flowering
B
Correct answer
Explanation
The start of photosynthesis marks the end of germination process.
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Fungus absorbs water for seed.
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Fungus provides essential nutrients to seed.
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Fungus inhibits the abscisic acid in seeds to help break their dormancy.
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Fungus provides sugars to seed.
D
Correct answer
Explanation
Orchid seeds cannot germinate unless they have fungus that is attached. They depend on fungus to provide simple sugars.
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flowering induction by low temperature treatment of moist seeds
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growth curvature in response to light
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cycle of day and night
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effect of day length on plant growth
A
Correct answer
Explanation
Vernalization is the process where flowering is induced by exposing plants to prolonged cold temperatures. It is a common physiological response in many winter annuals and biennials.
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apomixis
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double fertilization
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triple fertilization
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karyogamy
B
Correct answer
Explanation
Double fertilization is a characteristic process in angiosperms where one male gamete fuses with the egg to form a zygote, and the other fuses with the secondary nucleus to form the primary endosperm nucleus.
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microsporocyte
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primary endosperm nucleus
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zygote
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secondary nucleus
B
Correct answer
Explanation
The fusion of one male gamete with the two polar nuclei (or the secondary nucleus) results in the formation of the primary endosperm nucleus (PEN), which is triploid.
B
Correct answer
Explanation
Maize (corn) is a classic example of a plant that relies on cross-pollination, typically by wind (anemophily), to ensure genetic diversity.
B
Correct answer
Explanation
Non-endospermic (exalbuminous) seeds are those where the endosperm is consumed during development, as seen in most dicots like peas and beans. Maize, wheat, and rice are monocots with endospermic seeds.
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aleurone layer
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epidermis
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scutellum
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epithelium
A
Correct answer
Explanation
Aleurone is a protein found in protein granules of maturing seeds and tubers. The term also describes one of the two major cell types of the endosperm, the aleurone layer. The aleurone layer is the outermost layer of the endosperm, followed by the inner starchy endosperm.
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Only a, b and c
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Only b, c and d
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Only c, d and e
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Only a, b and f
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Only a, e and f
D
Correct answer
Explanation
This is the correct answer. Peas, gram and beans are dicot seeds.
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Dispersal
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Sowing
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Germination
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Reproduction
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Harvesting
C
Correct answer
Explanation
The process by which a seed produces a seedling or a baby plant is called germination.