Which reptiles have a four-chambered heart?

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Snake

Lizard

Crocodile

snail

answer is C.

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Detailed Solution

Concept- The majority of reptiles have one ventricle and two atria. The 23 current species of crocodilians (alligators, caimans, crocodiles, and gharials) are the sole exceptions; they have four-chambered hearts with two atria and two ventricles, just like birds and mammals.
A crocodile's four-chambered heart is a characteristic of reptiles. Although hearts in reptiles typically have three chambers. The crocodile, then, is an exception to this rule. Like mammals, it has two auricles and two ventricles. Since crocodiles spend most of their time submerged, this adaptation aids in lowering blood circulation rates and conserves oxygen.
The most intricate kind of blood circulation among vertebrates is known to exist in crocodiles.
Hence, the correct answer is option 3.

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