Home Biology Biological Classification Introduction and Kingdom–Monera Free living nitrogen-fixing bacteria are fou…
Biology Biological Classification Introduction and Kingdom–Monera Single Correct MCQ
Published on: August 21, 2026

Free living nitrogen-fixing bacteria are found in-

A
Air
B
Soil
C
Root nodules
D
None of above

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Verified by Experts
The correct answer is:
B

Free-living nitrogen-fixing bacteria (e.g., Azotobacter) are commonly found in soil. They fix atmospheric nitrogen independently in the soil environment.

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