NEETZoologyMicrobes in Human Welfare
What is the role of Rhizobium in biofertilisers?
Options
- AAbsorbing nitrogen from soil
- BPassing nitrogen to plants
- CFixing atmospheric nitrogen into organic forms
- DIncreasing soil fertility
Correct answer
C. Fixing atmospheric nitrogen into organic forms
Step-by-step solution
Biofertilisers are organisms that enrich the nutrient quality of the soil. 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.