First slide

Pre-fertilisation : Structures and Events

Question

A typical angiospermic embryo sac, at maturity is:

Easy

A

7 celled and 8 nucleated
B

8 celled and 7 nucleated
C

8 celled and 8 nucleated
D

7 celled and 7 nucleated

Solution

A typical angiospermic embryo sac, at maturity is 7 celled and 8 nucleated.
7 cells are :
3 antipodals, 2 synergids, 1 egg cell and a central cell.
Each of the 7 cells except central cell has 1 nucleus. Whereas the central cell has 2 polar nuclei. Therefore, the number of nuclei becomes 8.

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App