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JAMB Biology 2002 Question 28

Question 28

Animal Nutrition

Examples of organisms in which extracellular digestion occurs are

  1. A.fungus, loranthus and housefly
  2. B.rhizopus, sponges and earthworm
  3. C.roundworm, tapeworm and hydra
  4. D.rhizopus, housefly and hydra
Show the answer and explanation

Answer: D (rhizopus, housefly and hydra)

Explanation

Extracellular digestion happens outside the cells. Rhizopus and the housefly release enzymes onto their food, and Hydra digests prey in its body cavity. A tapeworm does not digest at all, and sponges digest inside their cells.