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Economic importance of algae. |
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Answer» (a) Many species of algae are used as food. For e.g. Chlorella (rich in cell proteins hence used as food supplement, even by space travelers), Sargassum, Laminaria, Porphyra, etc. (b) Alginic acid is produced commercially from Kelps. (c) Hydrocolloids like algin and carrageen are obtained from brown algae and red algae respectively. (d) ‘Agar’ which is used as solidifying agent in tissue culture is obtained from red algae like Gelidium and Gracilaria. (e) Brown algae like sea weeds are used a fodder for sheep, goat, etc. (f) Role of algae in environment. (a) Being photosynthetic, algae help in increasing the level of dissolved oxygen in their immediate environment. (b) Algae are primary producers of energy rich compounds which forms the basis of food cycles in aquatic animals. |
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