Why are cyanobacteria considered useful in pa | vedclass

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(A) Cyanobacteria are autotrophic microbes widely distributed in aquatic and terrestrial environments,many of which can fix atmospheric nitrogen (they

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They act as biofertilisers by fixing atmospheric nitrogen.

Vedclass · Answer

(A) Cyanobacteria are autotrophic microbes widely distributed in aquatic and terrestrial environments,many of which can fix atmospheric nitrogen (they contain specialized cells called heterocysts),e.g.,$Anabaena$,$Nostoc$,$Oscillatoria$,etc.In paddy fields,cyanobacteria serve as an important biofertiliser and increase crop yield by up to $50 \%$.Blue-green algae also add organic matter to the soil,which improves soil structure and increases its overall fertility.

Why are cyanobacteria considered useful in paddy fields?

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