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| 1. | Different forms of green, red, brown and blue green algae. | 
| Answer» 1. Forms of green algae: Unicellular motile: e.g. Chlamydomonas Unicellular nonmotile: E.g. Chlorella Colonial forms: e.g. Volvox Filamentous branched: e.g. Cladophora, Chara Filamentous unbranched: e.g. Ulothrix, Spirogyra 2. Forms of red algae: The red thalli of most of the red algae are multicellular, macroscopic, e.g. Gracilaria, Gelidium, Porphyra, Polysiphonia, etc. . 3. Forms of brown algae: Simple, branched and filamentous: Sargassum, Fucus, Ectocarpus Profusely branched: Laminaria, Dictyota, Kelps (Seaweed) 4. Forms of blue-green algae: Unicellular, colonial or filamentous, freshwater or marine water or terrestrial algae. | |