Question
Easy
What does the term тАШnitrogen fixation' mean?
1
Conversion of nitrogen compounds into
gaseous nitrogen
2
Conversion of ammonia into nitrates by
the bacteria present in soil
3
Release of nitrogen present in dead
organic matter back into soil
4
Conversion of atmospheric nitrogen to a
more usable form for living organisms
Question Details
Time to Solve: 12
Exam: CTET
Level/Paper: CTET_P2
Chapter: Microorganisms
Topic: Beneficial Roles
Correct Answer
Option D
Explanation
The term тАШnitrogen fixationтАЩ refers to the process of converting atmospheric nitrogen (NтВВ) into a form that is usable by living organisms, such as ammonia (NHтВГ) or related compounds. This process is crucial because atmospheric nitrogen, which makes up about 78% of the Earth's atmosphere, is not directly accessible to most living organisms. Nitrogen fixation is primarily carried out by certain bacteria and archaea, some of which have symbiotic relationshipsтАжRead More
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