Which of the following crops would enrich the soil with nitrogen?
A
Apple
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B
Pea
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C
Sunflower
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D
Potato
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Solution
The correct option is D Pea The pea plant belongs to the family Fabaceae. The roots of the plant are known to have nodules due to the bacterial symbiotic association. These bacterial cells possess the enzyme nitrogenase which helps the cells to fix the atmospheric nitrogen into nitrate salts and thus, enrich the soil with nitrogen.