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Question

The important crop that helps to restore soil fertility by nitrogen fixation and is also a good source of protein is _________.
  1. Vegetables
  2. Fruits
  3. Cereals
  4. Pulses

A
Fruits
B
Pulses
C
Vegetables
D
Cereals
Solution
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Nitrogen is the most essential nutrient for plant. Pulses can utilize nitrogen present in the soil by symbiotic relation with nitrogen fixing bacteria that live inside roots of the plants.

Pulses also improve fertility of soil and hence are grown as rotation crops in between the different crops.

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