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JAMB Biology 2001 Question 1

Question 1

Ecological Associations

An association between the root nodule of a leguminous plant and Rhizobium sp, is known as

  1. A.commensalism
  2. B.mycorrhiza
  3. C.parasitism
  4. D.symbiosis.
Show the answer and explanation

Answer: D (symbiosis.)

Explanation

Rhizobium fixes nitrogen for the legume and gets food and shelter in return; both benefit, so it is symbiosis.