Q. In root nodules of legumes, leghaemoglobin is important because it
A) Transports oxygen to the root nodule
B) Acts as an oxygen scavenger
C) Provides energy to the nitrogen fixing bacterium
D) Acts as a catalyst in transamination
Explanation
The root nodules in leguminous plants are pinkish due to presence of pigment leghaemoglobin. The cells of root nodules contain irregular polyhedral bacteria called bacteroids. Leghaemoglobin is located between bacteroids and surrounding host membrane. Leghaemoglobin is an oxygen scavenger and protect the nitrogen fixing enzyme nitrogenase.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.