First slide

Pre-fertilisation : Structures and Events

Question

Which is the most common type of embryo sac in angiosperms ?

Easy

A

Tetrasporic with one mitotic stage of divisions
B

Monosporic with three sequential mitotic divisions
C

Monosporic with two sequential mitotic divisions
D

Bisporic with two sequential mitotic divisions

Solution

In a majority of flowering plants, one of the megaspores is functional while the other three degenerate. Only the functional megaspore develops into the female gametophyte (embryo sac). This method of embryo sac formation from a single megaspore is termed monosporic development.
Functional megaspore undergoes three sequential mitotic divisions to form a mature female gametophyte.

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