Question

what is the main environmental function of nostoc and anabaena
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Answer 1

Explanation:

Heterocysts are specialized nitrogen-fixing cells formed during nitrogen starvation by some filamentous cyanobacteria, such as Nostoc and Anabaena. They fix nitrogen from the air using the enzyme nitrogenase. Nitrogenase is inactivated by oxygen, so the heterocyst must create a micro anaerobic environment.

Answer 2

Answer:

Hetrocystc are specialized nitrogen fixing cells formed during nitrogen starvation by some filamentous cyanobacteria , such as nostoc and Anabaena .They fix nitrogen from the air using the enzyme nitrogenase .Nitrogenase is inactivated by oxygen , so the hyterocyst must create a micro anaerobic environment.