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  4. Cyanobacteria are particularly useful as biofertilizers in the fields of

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Q. Cyanobacteria are particularly useful as biofertilizers in the fields of

ManipurManipur 2006Microbes in Human Welfare

Solution:

Cyanobacteria are also called as Blue green algae. They are prokaryotic bacteria. They are nitrogen fixing bacteria. They are capable of fixing atmospheric nitrogen into ammonium compounds and making it available to the plants. They are useful bifertilizers in fields of rice for cultivation. They are used either free-living and in symbiotic association. Thus, the correct answer is 'Rice.'