Question

Heterocysts are Specialised in

1) Nitrogen fixation under aerobic conditions

2) Nitrogen fixation under anaerobic conditions

3) Formation of internal hormogones

4) Saprotrophism​

Answer 1

Answer:

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Explanation: Heterocysts are specialized nitrogen-fixing cells formed during nitrogen starvation by some filamentous cyanobacteria, such as Nostoc punctiforme, Cylindrospermum stagnale, and Anabaena sphaerica. ... Nitrogenase is inactivated by oxygen, so the heterocyst must create a microanaerobic environment.

Answer 2

Answer:

1) Nitrogen fixation under aerobic conditions

Explanation:

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