Describe the process of microsporogenesis up to the formation of a microspore?
Microsporogenesis and formation of pollen grains: Every cell of the sporogenous tissue is a potential pollen mother cell (PMC) and can give rise to microspore tetrad/ pollen grains. But some of them forego this potential and differentiate into the pollen mother cells of microspore mother cells. Each microspore mother cell undergoes meiosis to form a cluster of four haploid cells, called microspore tetrad. As the anther matures, the microspores dissociate from the tetrad and develop into pollen grains. The tetrad may be tetrahedral, isobilateral, T-shaped, L-shaped and linear. The nucleus of the microspore undergoes mitosis to form large vegetative cell and a small spindle¬shaped generative cell that floats in the cytoplasm of the vegetative cell.
