First slide

Post-fertilisation: Structures and Events

Question

The ploidy of the endosperm in gymnosperms and angiosperms respectively are

Easy

A

triploid in both.
B

diploid in both.
C

haploid in gymnosperms and triploid in angiosperms.
D

diploid in gymnosperms and triploid in angiosperms

Solution

In gymnosperms the endosperm represents the female gametophyte. Therefore, it is haploid.
In angiosperms the endosperm is formed from PEN. PEN develops after the fusion of secondary nucleus with the male gamete. Therefore, it is triploid.

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