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BIOLOGY

JAMB 2005 - Question 27

Biology 2005 JAMB Past Questions - Question 27: The main function of the structure labelled I is to

Choose the correct answers from the options given.

The main function of the structure labelled I is to

A: store food for the young plant

B: pull the young shoot above the ground

C: store water for the seedling

D: protect the young plumule

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Correct Answer

Explanation

The portion labelled I is the cotyledon contains stored food used up during the early development of the seedling. by the time the cotyledons are carried above the soil, they turn green and become photosynthetic. Option 'C' is carried out by the curved or hooked hypocotyl which is the portion of seedling between the cotyledons and the radicle. when the hypocotyl straightens and elongates, it carries the delicate plumule and cotyledons.