Azotobacter fixes atmospheric nitrogen in the soil by:__________?
Correct answer: A. Non-symbiotically
- A. Non-symbiotically
- B. Symbiotically
- C. Can fix A & B
- D. None of these
Explanation
Azotobacter is a free-living nitrogen-fixing bacterium that fixes atmospheric nitrogen independently in the soil, without forming root nodules. This contrasts with symbiotic organisms such as Rhizobium.
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