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WAEC Biology 2013 Objective — Question 15

Question 15 of 60 from the West African Examinations Council (WAEC) Biology 2013 Objective paper, with the correct answer and a full explanation.

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Which of the following statements about the diaphragm of a mammal is not correct?

  • A. It separates the thorax and the abdomen
  • B. It is a thick layer of muscle
  • C. It is made of epithelial cellsCorrect
  • D. It is part of the human respiratory apparatus

Explanation

The diaphragm separates the thoracic and abdominal cavity, is part of the respiratory apparatus, and is a thick layer of muscle — not made of epithelial cells, so C is the incorrect statement.

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