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26/08/2020 6:49 pm
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Which of the following is a cyanobacterium?
(a) Nostoc
(b) Chara
(c) E. coli
(d) Polysiphonia
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26/08/2020 6:50 pm
(a) Nostoc
Explanation:
Nostoc is a cyanobacterium. Cyanobacteria are gram (–) ve prokaryotes which perform oxygenic photosynthesis like plants. Cyanobacteria can be unicellular (e.g. Spirulina), colonial. (e.g. Nostoc) or filamentous (e.g. Oscillatoria)