WAEC Biology 2009 Objective — Question 19
Question 19 of 60 from the West African Examinations Council (WAEC) Biology 2009 Objective paper, with the correct answer and a full explanation.
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Which of the following statements about the development of the foetus is not correct?
- A. A. The circulatory system of the foetus is totally separate from that of the motherCorrect
- B. B. The foetus depends on the mother's blood for its food and oxygen
- C. C. The foetus is surrounded by a water sac
- D. D. Food and oxygen are carried across the placenta to the embryo's blood
Explanation
The statement that the circulatory system of the foetus is totally separate from that of the mother is NOT correct - although the foetal and maternal blood do not mix directly, they are closely connected via the placenta, across which food and oxygen are exchanged.
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