NURSING ANM AND GNM

Detailed explanation-1: -Leghemoglobins accumulate to millimolar concentrations in the cytoplasm of infected plant cells prior to nitrogen fixation and are thought to buffer free oxygen in the nanomolar range, avoiding inactivation of oxygen-labile nitrogenase while maintaining high oxygen flux for respiration.

Detailed explanation-2: -The leghaemoglobin is responsible for creating anaerobic conditions in the root nodules of the legume plant. It acts as oxygen scavenger and protects enzyme nitrogenase from oxygen and helps in proper functioning of the enzyme.

Detailed explanation-3: -The key roles of leghemoglobin are to promote the delivery of oxygen to the nitrogen-fixing bacteria and to shield the nitrogenase enzyme from oxygen inactivation. Leghaemoglobin is a scavenger of oxygen that protects nitrogenase during fixation of nitrogen.

Detailed explanation-4: -So, the correct answer is ‘Clostridium’.