Reproduction in Plants - Advanced Concepts
Q. In angiosperms, what is the role of the endosperm?
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A.
To protect the seed
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B.
To provide nourishment to the developing embryo
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C.
To facilitate pollination
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D.
To aid in seed dispersal
Solution
The endosperm provides nourishment to the developing embryo within the seed.
Correct Answer: B — To provide nourishment to the developing embryo
Q. What is apomixis in plants?
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A.
A form of sexual reproduction
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B.
A form of asexual reproduction without fertilization
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C.
The process of pollination
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D.
The formation of seeds from ovules
Solution
Apomixis is a form of asexual reproduction where seeds are produced without fertilization.
Correct Answer: B — A form of asexual reproduction without fertilization
Q. What is the primary function of the ovule in seed plants?
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A.
To produce pollen
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B.
To develop into a seed after fertilization
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C.
To absorb water and nutrients
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D.
To support the plant structure
Solution
The ovule develops into a seed after fertilization, containing the embryo and stored nutrients.
Correct Answer: B — To develop into a seed after fertilization
Q. What is the role of the stigma in flowering plants?
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A.
To produce ovules
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B.
To receive pollen during fertilization
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C.
To support the flower structure
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D.
To attract pollinators
Solution
The stigma is the part of the pistil that receives pollen during the process of fertilization.
Correct Answer: B — To receive pollen during fertilization
Q. What type of reproduction involves the fusion of gametes from two different individuals?
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A.
Asexual reproduction
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B.
Vegetative propagation
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C.
Sexual reproduction
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D.
Apomixis
Solution
Sexual reproduction involves the fusion of male and female gametes from different individuals.
Correct Answer: C — Sexual reproduction
Q. Which of the following is a characteristic of dioecious plants?
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A.
Both male and female reproductive organs are present on the same plant
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B.
Plants have separate male and female individuals
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C.
They reproduce only asexually
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D.
They do not produce flowers
Solution
Dioecious plants have separate male and female individuals, each producing their respective gametes.
Correct Answer: B — Plants have separate male and female individuals
Q. Which of the following structures is responsible for the production of male gametes in flowering plants?
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A.
Stigma
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B.
Anther
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C.
Style
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D.
Ovary
Solution
The anther is the part of the stamen that produces pollen, which contains male gametes.
Correct Answer: B — Anther
Q. Which plant hormone is primarily responsible for promoting fruit development?
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A.
Auxin
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B.
Gibberellin
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C.
Cytokinin
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D.
Ethylene
Solution
Ethylene is the hormone that promotes fruit ripening and development.
Correct Answer: D — Ethylene
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