Crocodiles have ______ heart chambers.

four five two three

four

The correct answer is Option (1) -four Crocodiles have four heart chambers. This is unlike most reptiles, which have three-chambered hearts. Crocodiles are an exception and have a four-chambered heart similar to birds and mammals. This four-chambered heart structure allows for a more efficient separation of oxygenated and deoxygenated blood, which is beneficial for their bursts of activity and dives underwater.