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B
seed coat
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C
radicle
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D
plumule
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Solution
The correct option is A micropyle The micropyle is a small opening that is found in the ovule and is retained in the seed after fertilization. Seeds absorb water through the micropyle. Micropyle also helps in the respiration and in exchange of gases.
Seed coat helps in the protection of the seed from the physical stress such as shock, temperature variations or water damage.
Plumule is the embryonic axis in a germinating seed that grows as a future shoot.