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 [...]
In this article we will discuss about the general features and phylogenetic relationships of phaeophyta. General Features of Phaeophyta: The Phaeophyta or brown algae, in general, are restricted to the sea—the seaweeds, with a few exceptional fresh-water forms (species of Heribaudiella, Sphacelaria, Lithoderma, Pseudobodanella and Pleurocladia lacustris, A. Br.). Usually the marine members are abundant in cold-waters. But warm-water brown [...]