JIPMER2008ZoologyMicrobes in Human Welfare
What happened when we inoculated Rhizobium in wheat field?
Options
- ANo increase in production (nitrogen content of soil remains same)
- BA lot of increase in production (nitrogen content of soil increases)
- CFertility of soil decreases
- DFertility of soil increases
Correct answer
A. No increase in production (nitrogen content of soil remains same)
Step-by-step solution
Rhizobium species is symbiotic nitrogen-fixing bacteria, which occurs in root nodules of legumes. When we inoculated Rhizobium in wheat field, there is no increase in production. Because wheat has no root nodules for fixing nitrogen content. Therefore, nitrogen content of soil will remain same.