Question

Describe pre-fertilization events.

Answer 1

The description of the events of pre fertilization is given below :

i) Gametogenesis

It is the process in which the two kinds of gametes are formed, for example - sperm and egg in humans. Haploid nature can be seen in the gametes.

ii) Transfer of Gametes

This occurs so that both male as well as female gametes can contact together and result in fusion.

Answer 2

Description of pre-fertilization events:

The following events are considered as pre-fertilization events:

• Gametogenesis

• Transfer of gametes.

Gametogenesis:

• It is the procedure of development of gametes.

• Male gametes are shaped inside the anther. It include microsporogenesis and microgametogenesis.

• The female gametes are shaped inside the ovules and include two stages megasporogenesis and megagametogenesis.

Transfer of gametes:

• Seed formation requires fertilization. In this procedure, the "pollen grains" from the anther are moved to the stigma.

• It germinates on the stigma and arrive at the ovule through the tube like structure formed by the pollen.

• The male gametes are then discharged close to the egg.