Q25. Which one of the following is a biological nitrogen fixer and why?
a-Clostridium
b-Rhizobium
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Required Answer:
☑ Rhizobium.
Rhizobium is a bacterium found in soil that helps in fixing nitrogen in leguminous plants. It attaches to the roots of the leguminous plant and produces nodules. These nodules fix atmospheric nitrogen and convert it into ammonia that can be used by the plant for its growth and development.
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Answer:
a nitrogen-fixing bacterium that is common in the soil, especially in the root nodules of leguminous plants.
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