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 four families under which chaetophorales has been classified. The families are: 1. Chaetophoraceae 2. Coleochaetaceae 3. Trentepohliaceae 4. Pleurococcaceae. Family # 1. Chaetophoraceae: Chaetophoralean algae are heterotrichous in habit frequently bearing terminal or lateral hair-like projections. In their heterotrichy both the erect and prostrate portions of the plant may be well developed (e.g., Stigeoclonium) or [...]
The Xanthophyta or Heterokontae are commonly known as yellow-green algae include only one class Xanthophyceae. This division has close relationship with the Ghlorophyta comprising both marine and fresh-water forms. Certain species grow on drying mud, on trunk of trees, on damp walls, and similar other habitat. There are varied forms of vegetative body ranging from unicellular coccoid, siphonaceous to filamentous [...]