Which bacteria fix the atmospheric nitrogen into organic form to be utilized by plants as nutrients?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → Rhizobium
Option (1) Rhizobium — Correct. Rhizobium fixes nitrogen in root nodules of legumes.
NCERT Extract:
Microbes as Biofertilisers – “… The main sources of biofertilisers are bacteria, fungi and cyanobacteria. You have studied about the nodules on the roots of leguminous plants formed by the symbiotic association of Rhizobium. These bacteria fix atmospheric nitrogen into organic forms, which is used by the plant as nutrient.”