Biology · Environmental Studies
Plant Reproduction and Germination
835 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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Gram
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Bean seed
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Maize
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Castor seed
C
Correct answer
Explanation
Monocots or monocotyledons are one of two major groups, of flowering plants, that have one cotyledon (seed-leaf) Examples of monocots of grass family, used for human consumption, is, rice, wheat, corn (maize), rye, barley, teff, millet and other species.
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2 years
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5 years
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4 years
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Several years
C
Correct answer
Explanation
The validity of the seeds of watermelon and tomato is 4 years.
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Lettuce germinates in dark and onion requires light for germination.
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Lettuce requires light for germination and onion germinates in dark.
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Lettuce and onion require light for germination.
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Lettuce and onion germinate in dark.
B
Correct answer
Explanation
Lettuce requires light for germination and onion germinates in dark.
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impermeability of seed coat to water
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impermeability of seed coat to oxygen
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presence of plant growth inhibitors
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rudiment embryo
B
Correct answer
Explanation
Xanthium seeds are impermeable to oxygen as they have very hard seed coat.
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pea seeds
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mango seeds
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orchid seeds
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apple seeds
C
Correct answer
Explanation
Availability of food is a limiting factor in the germination of orchid seeds.
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Hard seed coat
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Over ripening
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Presence of growth inhibitors
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Rudiment embryo
D
Correct answer
Explanation
Rudiment embryo is present in Gingko.
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resistant to pathogens
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impermeable to water
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feasible for dispersion by animals
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capable of epigeal germination
B
Correct answer
Explanation
Waxy coating on the surface of beans makes them impermeable to water.
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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.