First slide

Pre-fertilisation : Structures and Events

Question

How many nuclei are found in female gametophyte?

Easy

A

8
B

7
C

6
D

5

Solution

A typical angiospermic embryo sac at maturity has 8-nuclei. Six out of the eight nuclei are surrounded by cell walls and organised into cells (egg apparatus and antipodal cells) and the remaining two nuclei, called polar nuclei, are situated below the egg apparatus in the large central cell.

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