Which of the organisms play an important role in the nitrogen cycle?
A
Rhizobium
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B
Blue-green algae
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C
Nitrosomonas
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D
Tuberculosis
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Solution
The correct options are A Rhizobium B Blue-green algae C Nitrosomonas Rhizobium and some blue-green algae help in the fixation of atmospheric nitrogen into ammonia. Nitrosomonas bacteria convert ammonia to nitrites.