First slide

Pre-fertilisation : Structures and Events

Question

In an embryo sac, the cells that degenerate after fertilisation are

Easy

A

synergids and primary endosperm cell
B

synergids and antipodals
C

antipodals and primary endosperm celI
D

egg and antipodals

Solution

Synergids are short-lived (one of them degenerates at the time of the entry of pollen tube and second after the entry of pollen tube into embryo sac).
Antipodals are the smallest cells of all and are the vegetative cells of embryo sac. They degenerate before or after fertilisation.

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