Question

What is nitrogen fixation describe this phenomenon in context with nitrogen cycle

Answer 1

Nitrogen fixation is a process by which nitrogen  in the air is converted into ammonia(NH3) or related nitrogenous compounds.Atmospheric nitrogen, which is molecular dinitrogen (N2), is relatively nonreactive and is metabolically useless to all but a few microorganisms. The fixation process converts N2 into ammonia, which is metabolized by most organisms.

Answer 2

Explanation:

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Q. 17

3.5

( 4 Votes )

What is nitrogen fixation? Describe this phenomenon in context with N2 cycle.

Class 9th

Dr. P.S. Verma & Dr. V.K. Agarwal - Biology

6. Natural Resources

Answer :

The conversion of atmospheric nitrogen into ammonia NH3 is known as nitrogen fixation. Bacteria that perform nitrogen fixation are either free living or they may form symbiotic associations with other organisms.

NITROGEN CYCLE- It is a process by which nitrogen is converted into various chemical forms and is made available to living organisms.

There are various steps in a nitrogen cycle. Nitrogen fixation takes place by the action of microbes, inert nitrogen breaks down in the air and combines with oxygen to form nitrous oxide. Nitrifying bacterias in the soil take up this atmospheric nitrogen and make it available for plants. Plants get this nitrogen. Later when they decay, the nitrogen is returned back into the environment. In the soil there are some denitrifying bacterias too, they break down nitrate and release nitrogen into the atmosphere thus they end the nitrogen cycle.