How does the pollen mother cell develop into a mature pollen grain? Illustrate the stages with labelled diagrams.

Explanation

Pollen mother cells undergo meosis to form a microspore tetrad by the process called microsprogenesis. The microsprogenesis dissociates from each other and develop into pollen grains.
The protoplast (pollen grain) then divides mitotically to form two unequal cells _ the vegetative cell and smaller generative cell.