Leg- haemoglobin is called oxygen scavenger. Justify with three points?
Answers
Answer:
Explanation:
Leg haemoglobin is a oxygen carrying hemoprotein found in the root nodules of the leguminous plants. It is produced in response to the roots being colonized by nitrogen- fixing bacteria called as rhizobia. It is produced as a result of symbiotic relationship between plant and the bacteria.
It maintains the level of oxygen in the root nodules. It has an affinity for oxygen. It maintains the concentration of oxygen in the root nodules low and releases the oxygen to the external environment of the root, which facilitates respiration by bacteria. As, high oxygen concentration prevents the presence of oxygen will prevent the activity of enzyme oxygen sensitive nitrogenase, which is an enzyme performs the function of fixation of atmospheric nitrogen.