alleryAnabaena and Nostoc are examples of:
ABacteria-only nitrogen fixers
BFree-living protozoa decomposers
CCyanobacterial biofertilisers
DFungal mycorrhizal partners
Answer & Solution
Correct answer: C. Cyanobacterial biofertilisers
Anabaena, Nostoc are CYANOBACTERIA (blue-green algae) that fix atmospheric nitrogen in paddy fields.
They photosynthesise and enrich soil with bioavailable nitrogen.
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