Q42 / 161 · NTA Abhyas (NEET) 2020 · Botany · Mineral Nutrition

The enzyme nitrogenase is highly sensitive to the molecular oxygen as it requires anaerobic condition. In nodule anaerobic condition is provided by 

  • A
    Nod factor
  • B
    bacteroids
  • Correct answer
    C
    Leghaemoglobin
  • D
    Auxin

Solution

Leghaemoglobin functions as oxygen scavenger and has high affinity for oxygen. It is synthesized by host cell and surrounds the bacteroid present in root nodule. It takes the oxygen, thereby protecting the enzyme nitrogenase from oxidation.

Hence, the correct answer is option: 'C'.

More Mineral Nutrition Questions