Tag: Aplanospore
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Xanthophyceae (Yellow Green Algae)
General characteristics of Xanthophyceae Members of Xanthophyceae are commonly fresh water (Tribonema) and most of them are free floating. Plant body is unicellular (Heterochloris) or multicellular. The multicellular bodies also exhibit various forms like: Palmelloid (Chlorogloea), dendroid (Mischococcus), coccoid (Chlorobotrys), rhizopodial (Stipitococcus). Cells are eukaryotic with silica and pectin in cell wall. Chief pigment are…
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General Characteristics of Chlorophyceae (Green Algae)
Grass green chromatophores. Presence of starch as reserve food Members of green algae mostly green in fresh water, a few in brackish and saline water and few are terrestrial. They show wide range of variations in their thallus structure like unicellular motile (Chlamydomonas), Coenobium(Volvox), palmelloid (Tetrospora), non motile (Chlorella), Dendroid (Ecballocystis), filamentous branched (Cladophora) and unbranched (Spirogyra), heterotrichous (Coleochaete), siphonaceous…
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Order: Volvocales
General characteristics of Volvocales Plant body is unbranched filamentous, but in ulvaceae it is parenchymatous or foliaceous. Cell are uninucleate and contain chloroplast of different types like C shaped, axial or parital etc. These are found in fresh water. e. g. Ulothrix some are grown in brackish water marine water and also on soil. Plant…
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Volvox (Rolling Alga)
Systematic position Class Chlorophyceae Order Volvocales Sub order Chlamydomonadineae Family Sphaerellaceae Genus Volvox Occurrence It includes about 20 species. All are aquatic and free floating. Mostly occur in fresh water bodies It occurs as green rolling ball of pin head sized coenobia. Vegetative structure Volvox is a colonial green alga and the colonies are oval to…