Question

Most famous nitrogen fixing bacterium/biofertilizer is

• A. Nitrobacter
• B. Nitrosomonas
• C. Nitrococcus
• D. Rhizobium

Answer 1

The correct option is D Rhizobium

Rhizobium is the most well-known species of a group of bacteria that acts as the primary symbiotic fixer of nitrogen. These bacteria can infect the roots of leguminous plants, leading to the formation of lumps or nodules where the nitrogen fixation takes place.

So, the correct answer is 'Rhizobium'.