reproduction in fungi part-2 for B.Sc, M.Sc, NEET, UPSC (Botany)
Channel: Biology By Neha Binwal
Date: 2021-03-14

This video is all about the following sexual process in reproduction in fungi.
1- Planogametic Copulation
2-Gametangial Contact
3-Gametangial Copulation
4-Spermatization
5-Somatogamy
1- Planogametic Copulation- fusion of two naked motile gametes (planogametes)
it is of 3 types-(1)Isogamy- the fusing gametes are morphologically similar but physiologically different and are formed on different hyphae.
(2)Anisogamy-the fusing gametes are morphologically as well as physiologically different. The male gamete is smaller and more active than the female gamete.
(3)Oogamy-the female gamete (ovum) is non-motile and the male gamete (antherozoid)is motile, they are formed in specialized gametangia, known as oogonium and antheridium.
2-Gametangial Contact- Here gametes are never released from gametangia, instead the male and female gametangia come in close contact with the help of a fertilization tube. Then one or more male nuclei migrate to the female gametangium.
3-Gametangial Copulation- involves fusion of the entire contents of two compatible gametangia. The gametangia come in close contact, their walls at the point of contact dissolves and their contents mix.
4-Spermatization- In some advanced genera sex organs are completely absent and the sexual process is accomplished by minute spore like spermatia (male gametes) and specialized receptive hyphae (female gametes).
5-Somatogamy- Here sex organs are not formed at all, but two vegetative cells or two vegetative hyphae take over the sexual function and fuse together.