Algae occur in variety of other habitats : moist stone, soils & ______ .
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Algae are chlorophyll-bearing, ______, ______ & largely aquatic ( both fresh & marine water ) organisms.
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Some of them also occur in association with ______ ( lichens) & animals (e.g. ______ )
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Sexual reproduction takes place through a fusion of ______ .
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Being photosynthetic they ______ the level of dissolved oxygen in their immediate environment .
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______ a unicellular algae rich in protein is used as food supplements even travellers.
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They are usually grass green due to dominance of pigments of ______ .
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The pigments are localised in definite ______ .
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The members of chlorophyceae are commonly called ______ .
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Asexual reproduction is by the production of different type of ______, the most common being ______ . They are flagellated ( motile) & on germination gives rise to new plants.
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Fusion of two gametes dissimilar in size, as in species of ______ is termed as ______ .
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Fusion between one large, ______ female gametes & a smaller, ______ male gametes is termed as ______ e.g. volvox & Fucus
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Algae are useful to man in variety of ways. Atleast a ______ of total carbon dioxide fixation on earth carried out by algae through photosynthesis
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They are paramount importance as ______ of energy-rich compound which form the basis of food cycle of all aquatic animals.
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Agar, one of the commercial products obtained from ______ & ______ Are used to grow microbes & in preparation of ice-creams & jellies
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