JAMB Biology 2019 Objective — Question 23
Question 23 of 40 from the Joint Admissions and Matriculation Board (JAMB) Biology 2019 Objective paper, with the correct answer and a full explanation.
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Which of the following substances is/are able to diffuse through the mother's blood into the blood of the foetus?
- A. glucose and oxygenCorrect
- B. urea and carbondioxide
- C. urea and oxygen
- D. carbondioxide and oxygen
Explanation
The foetus receives glucose and oxygen from the mother through the placenta. The placenta removes excretory wastes (urea, carbon dioxide) from the foetus's blood into the mother's blood for elimination.
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