Explain what happens when:(a) Testosterone is released in males.(b) Pollen grains falls on the stigma of flowers.

Explain what happens when:(a) Testosterone is released in males.(b) Po

1.	Explain what happens when:(a) Testosterone is released in males.(b) Pollen grains falls on the stigma of flowers.
Answer» When testosterone is released in males the secondary sexual characters such as facial hair start growing. Only after pollination, when pollen has landed on the stigma of a suitable flower of the same species, can a chain of events happen that ends in the making of seeds. A pollen grain on the stigma grows a tiny tube, all the way down thestyleto theovary. This pollen tube carries a malegameteto meet a female gamete in anovule. In a process calledfertilisation, the two gametes join and their chromosomes combine, so that the fertilised cell contains a normal complement of chromosomes, with some from each parent flower.