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Rhizobium, the organism found in the root nodules of legumes, is a -

  • A.Bacteria
  • B.Fungi
  • C.Lichen
  • D.Algae

Answer: A

Correct answer: Bacteria

Rhizobium is a soil bacterium. It invades the roots of legumes, forms nodules, and fixes atmospheric nitrogen into ammonia the plant can use, taking sugars in return.

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