NEETZoologyMicrobes in Human Welfare
What is the main purpose of using biofertilisers?
Options
- ATo avoid heavy use of toxic pesticides for controlling pests
- BTo produce industrial products
- CTo reduce dependence on chemical fertilisers
- DTo convert milk into curd
Correct answer
C. To reduce dependence on chemical fertilisers
Step-by-step solution
Farmers use biofertilisers regularly in their fields to replenish soil nutrients and to reduce dependence on chemical fertilisers. 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.