Complete the following flow chart

Pollen Mother cell $\to $ Pollen tetrad $\to $ Pollen grain $\to $ Vegetative cell

Pollen Mother cell $\to $ Pollen tetrad $\to $ Pollen grain $\to $   ..........

Pollen Mother cell $\rightarrow$ Pollen tetrad $\rightarrow$

Pollen grain $\rightarrow$ Vegetative cell

                     $\rightarrow$ Generative cell

In the process of microsporogenesis by the process of meiosis pollen grains (microspores) are produced from pollen mother cell. Microspores are produced in group of four cells. It is called pollen tetrad.

As anthers mature and dehydrate, the microspores dissociate from each other and develop into pollen grains. When pollen grain matures two cells are produced in which the bigger cell is called vegetative cell and smaller cell is called generative cell.