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Question

Leguminous plants are grown on dry lands to increase ______________.
  1. soil fertility
  2. groundwater level
  3. soil erosion
  4. biodiversity


Solution

The correct option is A soil fertility
Leguminous plants take nitrogen from atmosphere and convert it into nitrates in their roots. They release extra nitrogen into the soil. Hence, planting leguminous plants will increase the nitrogen content in the soil making it more fertile.

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