Which of the following statements are wrong for cyanobacteria?
(i) They are multicellular, colonial or filamentous, freshwater/marine or terrestrial algae.
(ii) The colonies are generally surrounded by gelationous sheath.
(iii) They often form blooms in polluted water bodies.
(iv) Some of these organisms can fix atmospheric nitrogen in specialized cells called heterocysts.
(v) They have chlorophyll ‘a’ which is not similar to green plants and are photosynthetic autotrophs.
(vi) Nostoc and Anabaena included in this group
Text Solution
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Statement (i) is wrong because cyanobacteria are unicellular, not multicellular. While they can form colonies or filaments, they are fundamentally single-celled organisms.
Statement (v) is wrong because cyanobacteria possess chlorophyll ‘a’ that is similar to that found in green plants.
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