Question

How many meiotic and mitotic division are required for the formation of male gametophyte from pollen mother cell

Answer 1

Answer:

As it varies in different plant kingdom.

In Angiosperms,

1 meiotic division & 2 Mitotic division occurs.

Explanation:

●Microspore mother cell undergoes One meotic division and gives Tertrad microspores.

●Then, the nucleus within the microspore divides Mitotically to form one big vegetative nuclei and one small generative nuclei.

●After pollination, the generative cell after entering into the pollen tube divide Mitotically to form two non-motile male gametes.

●Hence, one meiotic division and two mitotic division are required for the formation of fully mature male gametophyte from microspore mother cell in angiosperm.