Leghaemoglobin helps in

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(B) The root nodules of leguminous plants contain symbiotic nitrogen-fixing bacteria called $Rhizobium$. Root nodules are small,irregular outgrowths o

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protecting nitrogenase from $O_2$

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(B) The root nodules of leguminous plants contain symbiotic nitrogen-fixing bacteria called $Rhizobium$. Root nodules are small,irregular outgrowths on the roots which appear pinkish internally due to the presence of a pigment called leghaemoglobin. This pigment is structurally related to the blood pigment haemoglobin. Leghaemoglobin acts as an oxygen scavenger,which creates an anaerobic environment by binding to oxygen. This is crucial because the nitrogen-fixing enzyme,nitrogenase,is highly sensitive to molecular oxygen $(O_2)$ and is inactivated in its presence. Therefore,leghaemoglobin protects nitrogenase from $O_2$ to ensure efficient nitrogen fixation.

Similar Questions

Which of the following is responsible for nitrogen fixation in an aquatic fern?

Select the correct statements from the given:
$(a)$ Nitrogenase is a heterodimeric protein.
$(b)$ Root hairs curl by action of nitrogenase and plant 'nod factors'.
$(c)$ During symbiotic $N_2$ fixation,$ATP$ is provided by the legume plant.

Leguminous plants have the ability to fix atmospheric nitrogen through a symbiotic nitrogen fixation process. Which of the following statements is $NOT$ true regarding this process?

Select the correct statement.

Bacteria found in root nodules of legumes are

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