Assertion : Atmospheric nitrogen gas is always fixed by nitrogen-fixing micro-organisms.
Reason : Decomposers release nitrogen gas from dead bodies of plants and animals.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false
D.
If both assertion and reason are false
Nitrogen fixation is a process by which nitrogen in the Earth's atmosphere is converted into ammonia (NH3) or related nitrogenous compounds. Nitrogen- fixing bacteria is a micro- organisms which is capable of transforming atmospheric nitrogen into fixed nitrogen. More than 90 percent of all nitrogen fixation is effected by these organisms, which thus play an important role in the nitrogen cycle. Decomposers are the organisms that break down dead or decaying organisms. They use organic substrates in order to obtain their energy, carbon and nutrients for growth and development.
