Multiple choice general knowledge

Which of the following crops would be preferred for sowing in order to enrich the soil with nitrogen?

  1. Wheat

  2. Mustard

  3. Sunflower

  4. Gram
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Gram is a leguminous plant that hosts nitrogen-fixing bacteria in its root nodules, converting atmospheric nitrogen into soil-nitrates that enrich soil fertility. Wheat, mustard, and sunflower are non-leguminous crops that consume soil nitrogen without replenishing it.

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