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WAEC Biology 1992 Question 45

Question 45

Ecological Associations

Which of the following statements is not correct?

  1. A.Ascaris living in the human gut illustrates parasitism
  2. B.Rhizobium in the root nodules of legumes illustrates symbiosis
  3. C.Bacteria in the gut of a termite illustrates symbiosis
  4. D.Cattle and cattle egret are commensals
  5. E.Mushroom growing on decaying wood illustrates parasitism
Show the answer and explanation

Answer: E (Mushroom growing on decaying wood illustrates parasitism)

Explanation

A mushroom feeding on dead, decaying wood is a saprophyte, not a parasite.