Post-UTME Biology 2008 Objective — Question 9
Question 9 of 15 from the Post-UTME Screening (Post-UTME) Biology 2008 Objective paper, with the correct answer and a full explanation.
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A circulatory system that does not allow mixing of oxygenated blood in the mammalian heart is referred to as
- A. open
- B. doubleCorrect
- C. single
- D. closed
Explanation
Mammals have a double circulatory system with separated pulmonary and systemic circuits, preventing mixing.
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