What is the role of cyanobacteria in biofertilisers?

What is the role of cyanobacteria in biofertilisers?
  1. Fixing atmospheric nitrogen
  2. Adding organic matter to soil
  3. Replenishing soil nutrients
  4. All of the above

Solution

Cyanobacteria are widely distributed in aquatic and terrestrial environments, many of which can fix atmospheric nitrogen. They serve as an important biofertiliser in paddy fields and add organic matter to the soil, increasing its fertility.

Asked in: NCERT

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