Multiple choice

Nodules with nitrogen fixing bacteria are present in the roots of

  1. mustard

  2. rice

  3. gram

  4. cotton
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Legumes like gram (chickpea) form symbiotic relationships with Rhizobium bacteria, creating nitrogen-fixing nodules on their roots. These bacteria convert atmospheric nitrogen into ammonia that plants can use. Mustard, rice, and cotton are non-leguminous plants and do not form such nitrogen-fixing nodules.

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