Question

The incompletely divided ventricle of reptiles is sometimes portrayed as an evolutionary transition between the heart...

The incompletely divided ventricle of reptiles is sometimes portrayed as an evolutionary transition between the heart of primitive amphibians and the completely divided ventricles of birds and mammals. Do you agree with this portrayal? Why or why not?

Homework Answers

Answer #1

Yes. I agree with the statement that 'The incompletely divided ventricle of reptiles is sometimes portrayed as an evolutionary transition between the heart of primitive amphibians and the completely divided ventricles of birds and mammals.'
Explanation:
There is a single undivided ventricle present in amphibians and reptiles. On the other hand, birds and mammals contain full ventricular septum. Birds are mammals are endotherms and exhibit high rates of metabolism compared to ectotherms. Their heart rate is also several folds higher.
The undivided ventricle is a transition towards better respiratory/circulatory system.

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