Question

living organism play an important role in nitrogen cycle. comment on it?

Answer 1

Yes, living organisms play an important role in nitrogen cycle. There are some bacteria and blue-green algae, which fix the atmospheric nitrogen into soil, thereby increasing the fertility of soil. They are known as biological nitrogen fixers. One such bacterium is Rhizobium, which is found in the root nodules of leguminous plants such as pulses. It lives in symbiotic association with plants and fixes the atmospheric nitrogen in leguminous plants.