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JAMB Biology 1987 Question 6

Question 6

Animal Kingdom

A good example of a disploblastic organism is

  1. A.amoeba
  2. B.hydra
  3. C.earthworm
  4. D.roundworm.
Show the answer and explanation

Answer: B (hydra)

Explanation

Hydra's body is made of two cell layers, the ectoderm and endoderm, so it is diploblastic. Earthworms and roundworms have three layers, and amoeba is a single cell.