The nitrogen-fixing bacteria Rhizobium live in

Answer and explanation

Correct answer: D. root nodules of legumes

  1. Step 1: The bacteria change nitrogen from the air into compounds that the legume can use. Answer: root nodules of legumes. Why not the others: leaves of maize: Rhizobium does not live in maize leaves. the human gut: The human gut has other bacteria. stems of cassava: Cassava has no nitrogen-fixing nodules.

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