The leguminous plants are important in agriculture because_________________?
Correct answer: D. Help in nitrogen economy of nature
- A. They need very little water to grow
- B. Six crops are harvested in a year
- C. They are disease resistant
- D. Help in nitrogen economy of nature
Explanation
Legumes contain root-nodule bacteria that fix atmospheric nitrogen into forms usable by plants. This improves soil nitrogen availability and reduces dependence on nitrogen fertilizers in crop rotations.
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