Q. Which one of the following produces nitrogen fixing nodules on the roots of $Alnus$?
A) $Beijernickia$
B) $Rhizobium$
C) $Frankia$
D) $Rhodospirillum$
Explanation
[Solution] $Frankia$, an actinomycete, forms nitrogen-fixing root nodules on non-leguminous plants such as $Alnus$. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.