PLANT PHYSIOLOGY
MINERAL NUTRITION
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Oxygen removal
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Nodule differentiation
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Expression of nif gene
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Inhibition of nitrogenase activity
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Detailed explanation-1: -Leghemoglobin is the red-colored protein present in the root nodules of leguminous plants like beans. It combines with the free oxygen in the cell and helps in oxygen removal from root nodules by sending it to the mitochondria for respiration.
Detailed explanation-2: -Leghaemoglobin is found in the nodules of leguminous plants. 2. The main functions of leghemoglobin are (1) to facilitate oxygen supply to the nitrogen fixing bacteria and (2) to protect the enzyme, nitrogenase from being inactivated by oxygen.
Detailed explanation-3: -Leghemoglobin, an oxygen-carrying pigment, lowers the level of free oxygen in root nodules to preserve the anaerobic conditions necessary for nitrogenase action. Be a result, it is referred to as an oxygen scavenger.
Detailed explanation-4: -Leghemoglobin is a carrier of oxygen and hemoprotein present in leguminous plants’ nitrogen-fixing root nodules. In reaction to the roots being colonised by nitrogen-fixing bacteria, called rhizobia, these plants produce it, as a result of the symbiotic relationship between bacteria and plant.
Detailed explanation-5: -So the correct answer is ‘Oxygen removal’.