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WAEC Biology 1991 (August) Question 30

Question 30

Animal Nutrition

The diagram below represents a section through the earthworm showing its alimentary system (parts labelled I to VI).
What is the function of the part labelled IV?

Diagram for this question
  1. A.Production of sperm
  2. B.Temporary storage of food
  3. C.Mechanical grinding of food
  4. D.Pumping blood all over the body
  5. E.Producing cocoon for the eggs
Show the answer and explanation

Answer: C (Mechanical grinding of food)

Explanation

IV is the thick muscular gizzard, which grinds food with the help of soil particles.