Assertion
The 4-chambered heart of birds is superior to the 4-chambered heart of crocodiles.
Reason
Crocodilian heart retains both systemic arches that join, causing mixing of blood in the dorsal aorta while avian heart has lost left systemic arch.

Question

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Assertion The 4-chambered heart of birds is superior to the 4-chambered heart of crocodiles. Reason Crocodilian heart retains both systemic arches that join, causing mixing of blood in the dorsal aorta while avian heart has lost left systemic arch.

Assertion
The 4-chambered heart of birds is superior to the 4-chambered heart of crocodiles.
Reason
Crocodilian heart retains both systemic arches that join, causing mixing of blood in the dorsal aorta while avian heart has lost left systemic arch.

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Assertion The 4-chambered heart of birds is superior to the 4-chambered heart of crocodiles. Reason Crocodilian heart retains both systemic arches that join, causing mixing of blood in the dorsal aorta while avian heart has lost left systemic arch.

Assertion The 4-chambered heart of birds is superior to the 4-chambered heart of crocodiles. Reason Crocodilian heart retains both systemic arches that join, causing mixing of blood in the dorsal aorta while avian heart has lost left systemic arch.

1 Answers

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Assertion
The 4-chambered heart of birds is superior to the 4-chambered heart of crocodiles.
Reason
Crocodilian heart retains both systemic arches that join, causing mixing of blood in the dorsal aorta while avian heart has lost left systemic arch.