Q. The enzyme responsible for the reduction of molecular nitrogen to the level of ammonia in the leguminous root nodules is
A) Amminase
B) Nitrogenase
C) Nitrate reductase
D) Nitrite reductase
Explanation
Rhizobium leguminosarum causes biological nitrogen fixation in root nodules of leguminous plants. A pigment leghaemoglobin is present in the root nodules, which is a oxygen scavenger, i.e., protect the enzyme nitrogenase from oxygen. Nitrogen enzyme complex consists of two components, i.e., the Fe-protein and Mo-Fe protein.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.