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Biology · PYQ NEET UG 2020

हिन्दी

The product(s) of reaction catalysed by nitrogenase in root nodules of leguminous plants is/are:

  1. Nitrate alone
  2. Ammonia and oxygen
  3. Ammonia and hydrogen
  4. Ammonia alone

Correct answer · Option 3

Ammonia and hydrogen

Explanation

Biological nitrogen fixation catalysed by nitrogenase reduces atmospheric nitrogen into ammonia along with evolution of hydrogen: \( N_2 + 8H^+ + 8e^- + 16ATP \rightarrow 2NH_3 + H_2 + 16ADP + 16P_i \).

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