What are photosynthetic autotrophs and chemosynthetic autotrophs? Name the cell of Nostoc in
which nitrogen fixation takes place.
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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.
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6
Answer:
green plant prepare their own food from CO2 and water in the presence of sunlight and chlorophyll this process is called photosynthesis.
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