What is Azofication?
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It is also known as composite fixation of nitrogen
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It is also known as free fixation of nitrogen
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It is also known as free fixation of nitrogen fixed by Rhizobium bacteria
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It is also known as nitrogen gain through rains or snow
Reveal answer
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A
Correct answer
Explanation
Azotification is also known as 'associative nitrogen fixation' (or composite fixation), where free-living bacteria like Azospirillum fix nitrogen in close association with plant roots without forming nodules. Option A correctly states 'composite fixation'. Option C is incorrect because Rhizobium causes symbiotic fixation in nodules, not free/associative fixation. Option D refers to atmospheric deposition, not biological fixation.