First slide

Pre-fertilisation : Structures and Events

Question

The secondary nucleus is formed by

Easy

A

fusion of 2 megaspores
B

fusion of 2 polar nuclei
C

fusion of the egg cell with the male gamete
D

fusion of 2 antipodal nuclei

Solution

The secondary nucleus is formed by fusion of 2 polar nuclei. The polar nuclei are haploid therefore the secondary nucleus is diploid.

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