JAMB Biology 2011 Objective — Question 47
Question 47 of 60 from the Joint Admissions and Matriculation Board (JAMB) Biology 2011 Objective paper, with the correct answer and a full explanation.
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Leguminous crops are incorporated into crop rotation in order to
- A. A. improve aeration of soil
- B. B. promote nitrogen fixationCorrect
- C. C. increase the rate of soil formation
- D. D. improve upon the water holding capacity of the soil
Explanation
Leguminous crops host nitrogen-fixing bacteria (e.g. Rhizobium leguminosarium) in their root nodules, enriching the soil with nitrogen.
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