Ans: The process of formation of haploid microspores from a pollen mother cell (PMC) or
microspore mother cell through meiosis is called Microsporogenesis.
When the anther develops, each cell of sporogenous tissue functions as microspore mother
cell (MMC) which undergoes meiotic divisions to form four haploid microspores . The
microspores get arranged in a cluster of four cells which is known as microspore tetrads. As
the anther matures and dehydrates, the microspores dissociate from each other and
develop into pollen grains.