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WAEC Biology 2004 Question 40

Question 40

Ecological Associations

Which of the following defines symbiosis?

  1. A.parasites feed on dead organisms
  2. B.both organisms benefit mutually by living together
  3. C.Saprophytes feed on living organisms
  4. D.organisms serve as host to parasite
Show the answer and explanation

Answer: B (both organisms benefit mutually by living together)

Explanation

Symbiosis (mutualism) is a close association in which both partners benefit, such as Rhizobium in legume roots.