Question:
The process of conversion of nitrogen to ammonia by the microbes is described as
The process of conversion of nitrogen to ammonia by the microbes is described as
Updated On: Jun 14, 2022
- nitrification
- denitrification
- nitrogen-fixation
- Habers process
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The Correct Option is C
Solution and Explanation
Plants compete with microbes for the limited nitrogen that is available in soil. The process of conversion of nitrogen $ (N_{2}) $ to ammonia is termed as nitrogen-fixation. Only certain prokaryotic species are capable of fixing nitrogen. The enzyme nitrogenase which is capable of nitrogen reduction is present in prokaryotes.
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Concepts Used:
Metabolism of Nitrogen
Nitrogen Cycle
The central part of nitrogen metabolism is the Nitrogen Cycle. A nitrogen molecule is made of two nitrogen atoms held together by a solid triple covalent bond (N ≡ N). There are three central pools of nitrogen – atmosphere, soil, and biomass.
Atmospheric Pool
The process of converting atmospheric nitrogen (N2) to ammonia (NH3) is called nitrogen fixation. Atmospheric nitrogen is rooted in three ways – biological, electrical, and industrial.
Soil Pool
The above processes rooted atmospheric nitrogen into the soil. This nitrogen is then taken up by plants and animals, accordingly.
Biomass Pool
When plants and animals die, the organic nitrogen within them has degraded to ammonia the process is ‘Ammonification‘ and it returns nitrogen back to the soil.