Q. Which of the following is a nitrogen fixing organism?
A) BGA
B) $Rhizobium$
C) Both (a)and (b)
D) $Agaricus$
Explanation
The organisms involved in nitrogen fixing are called nitrogen fixing organisms.Generally, these are bacteria or cyanobacteria (blue-green algae). $Rhizobium\$and$\ Frankia$ are the symbiotic nitrogen fixing bacteria.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.