First slide

Pre-fertilisation : Structures and Events

Question

To form five fully developed Polygonum type of embryo sacs in angiosperms total number of meiosis and mitosis divisions generations required are

Moderate

A

1 Meiosis and 3 Mitosis
B

2 Meiosis and 6 Mitosis
C

3 Meiosis and 9 Mitosis
D

5 Meiosis and 35 Mitosis

Solution

Monosporic embryo sac is also known as Polygonum type of embryo sac.
To form monosporic embryo sac there is requirement of 1 meiosis and 7 mitosis.
Therefore to form 5 Polygonum type of embryo sacs there is the requirement of 1 X 5= 5 Meiosis and 7 X 5= 35 Mitosis.

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