Root nodules in plant help in__________________?
Correct answer: C. Nitrogen fixation
- A. Photosynthesis
- B. Aeration
- C. Nitrogen fixation
- D. Respiration
Explanation
Root nodules of legumes contain Rhizobium bacteria, which convert atmospheric nitrogen into forms usable by the plant. Thus, their key function is biological nitrogen fixation rather than photosynthesis or aeration.
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