First slide

Pre-fertilisation : Structures and Events

Question

How many meiosis and mitosis is/ are required for the formation of mature pollen grain from microspore mother cell?

Easy

A

1 meiosis and 1 mitosis
B

2 meiosis and 1 mitosis
C

1 meiosis and 3 mitosis
D

2 meiosis and 2 mitosis

Solution

A mature male gametophyte contain 1 vegetative cell and 1 generative cell. Therefore, for the formation of mature pollen grain there is the requirement of 1 meiosis and 1 mitosis.
Microspore Mother Cell (2n) undergoes meiosis and forms microspore (n). The microspores then undergo mitosis to produce vegetative and generative cell.

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