Write a brief account on gametogenesis with examples.

* The process of formation of the male and female gametes is called gametogenesis.
* The two gametes which are similar in appearance called as isogametes.
Eg : Cladophora
* The two gametes which are morphologically different are called as heterogametes.
Eg : Funaria, Pteris, Cycas
* The ploidy of gametes is haploid.
* The plants with haploid plant body form gametes by mitosis.
Eg : Monera, fungi, algae and bryophytes.
* In plants with diploid plant body, for formation of gametes meiotic division is necessary.
Eg : Gymnosperms and Angiosperms