Which of the following organism derives energy for $N_{2}$ fixation by performing photosynthesis?

Anabaena

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Azotobactor

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Rhizobium

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Bacillus

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Solution

The correct option is D Anabaena
Anabaena-Azollae is a small filamentous phototrophic cyanobacteria generally seen as a multicellular organism with two distinct, interdependent cell types. It is a small, circular, photoautotrophic vegetative cell that performs oxygenic photosynthesis and is typically blue green in color. Since it is a phototrophic cyanobacteria, it derives energy for N $_{2}$ fixation by performing photosynthesis. Thus, option A is correct.

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Which of the following organism derives energy for N2 fixation by performing photosynthesis?

Which of the following organism derives energy for $N_{2}$ fixation by performing photosynthesis?