Question

Three-chambered heart of Frog is not as efficient as four chambered human heart because

• A. Oxygenated and deoxygenated bloods mix up
• B. Ventricle does not pump blood properly
• C. It does not hold enough blood
• D. Heart muscles are not strong

Answer 1

The correct option is A Oxygenated and deoxygenated bloods mix up

The three-chambered heart is also called transitional heart and four-chambered heart is also called double circuit heart. Also in three-chambered heart oxygenated and non-oxygenated blood gets mixed before distribution because right and left aortic trunks join to form dorsal aorta and in four-chambered heart due to the completely divided atrium and ventricle heart is completely four-chambered with complete separation of arterial and venous blood.

So the correct answer is 'Oxygenated and deoxygenated blood mix up'.