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Why is the endosperm in flowering plants...

Why is the endosperm in flowering plants 3n?

A

because it is formed from 3 antipodal cells

B

because it is formed from 2 male gametes and an egg cell

C

because it is formed from 2 male gametes and a polar nucleus

D

because it is formed from 1 male gamete and 2 polar nuclei

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The correct Answer is:
D
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