In this article we will discuss about the evolutionary trends in the development of plant body in the chlorophyta. i. Evolution of Sexuality in the Chlorophyta: The Chlorophyta represent an evolutionary series in which the gametic union became most firmly established even in the most primitive forms and persists among the highest members of the series. The evolution in sexuality [...]
The following points highlight the three families under which volvocales has been classified. The families are:- 1. Chlamtdomonadaceae 2. Sphaerellaceae 3. Volvocaceae. Family # 1. Chlamtdomonadaceae: This family includes algae possessing unicellular biflagellate vegetative cells. Asexual reproduction is by zoospores and hypnospores and sexual reproduction ranges from—isogamy, anisogamy to simple and advanced oogamy. Genus Chlamydomonas: The genus Chlamydomonas represents one [...]
In this article we will discuss about the classification of ulotrichales. Family Ulotrichaceae: Plants are filamentous: Filaments are with or without an attaching base; typically unbranched, composed of cylindrical uniseriate cells with thin to gelatinous walls. Cells possess lateral plate-like or band-like chromatophores with or without pyrenoids. Asexual reproduction is by bi- and quadriflagellate zoospores, although a few genera (e.g., [...]