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Rhizobium bacteria

  • A.Help in digestion
  • B.Help in nitrogen fixation
  • C.Cause diseases
  • D.All of the above

Answer: B

Correct answer: Help in nitrogen fixation

Rhizobium lives in legume root nodules and converts atmospheric N2 into ammonia the plant can use, receiving sugars in return. It causes no disease and has nothing to do with digestion.

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