IGNOU MCH 16 2026 - Explain "in vivo" and "in vitro" nitrogen fixation

Question

Explain "in vivo" and "in vitro" nitrogen fixation.

21 Jan 2026

Answer :

Word Count : 289

Nitrogen fixation refers to the conversion of atmospheric nitrogen (N₂) into ammonia (NH₃) or related bioavailable nitrogen compounds that can be utilized by living organisms. This process occurs naturally through biological systems or can be simulated under controlled conditions, classified broadly as "in vivo" and "in vitro" nitrogen fixation. In vivo nitrogen fixation occurs within living organisms, primarily in symbiotic associations between certain bacteria and plants. The most studied

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