Arrange the following terms in the correct developmental sequence:

Pollen grain, sporogenous tissue, microspore tetrad, pollen mother cell, male gametes.

The correct sequence is –

Sporogenous tissues � Pollen mother cell � Microspore tetrad � Pollen grain � Male gametes

During microsporogenesis, the cells of the sporogenous tissue (which act as pollen mother cells), undergo meiotic divisions to form microspore tetrad containing 4 haploid microspores. As the anther matures, the microspores dissociate and develop into pollen grains. The pollen grains mature and give rise to male gametes.