Botany - Sexual Reproduction in Flowering Plants Question with Solution | TestHub

The pollen grains represent the male gametophytes. Pollen grains are shed at two-celled condition (a vegetative cell and a generative cell). The generative cell divides and forms the two male gametes during the growth of pollen tube in the stigma. In plants which shed pollen in the three-celled condition, pollen tubes carry the two male gametes from the beginning. Thus mature male gametophyte is a 3 celled structure.