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8.Microbes in Human Welfare
medium
Which of the following serve as biofertiliser in paddy fields?
A
Anabaena
B
Azospirillum
C
Nostoc
D
Both $(a)$ and $(c)$
Solution
Nostoc, Anabaena and Oscillatoria are cyanobacteria. They fix atmospheric nitrogen and increase the organic matter of soil through their photosynthetic activity. Blue-green algae increase the soil fertility by adding organic matter to the soil
Standard 12
Biology
