Unlike amphibians, reptiles A. have lungs to oxygenate blood.B. use single-loop circulatory system.C. have a closed circulation system in which blood circulates entirely within blood vessels.D. have ventricles that are further divided to lessen mixing of oxygen-rich and oxygen-poor blood.
Biology · High School · Tue Nov 03 2020
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Answer D is correct
D. have ventricles that are further divided to lessen mixing of oxygen-rich and oxygen-poor blood.
The septum ensures that blood does not mix between the right and left ventricles. One feature of truncus arteriosus is a large hole in the septum between the two ventricles (called a ventricular septal defect). This lets oxygen-poor blood mix with oxygen-rich blood.