Which of the following statement is correct w.r.t A in the …

Biology Biological Classification Image Based Problems Single Correct MCQ

Published on: August 21, 2026

Which of the following statement is correct w.r.t A in the given diagram?

is mucilaginous sheath and is also found in Rivularia is mucilaginous sheath and is also found in Anabaena is heterocyst and is also found in methanogens is heterocyst and is also found in Anabaena

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Heterocyst Identification: In filaments of cyanobacteria like Nostoc and Anabaena, heterocysts are differentiated cells that provide an anaerobic environment for the oxygen-sensitive enzyme nitrogenase.

Presence in Anabaena: Anabaena is another prominent genus of filamentous cyanobacteria that, like Nostoc, possesses heterocysts for nitrogen fixation.

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