Which one of the following animals has a four-chambered heart?

June 1, 2025 by rawan239

Which one of the following animals has a four-chambered heart?

[amp_mcq option1=”King cobra” option2=”Turtle” option3=”Chameleon” option4=”Crocodile” correct=”option4″]

This question was previously asked in

UPSC CAPF – 2022

Download PDF Attempt Online

The correct answer is D) Crocodile.

Most reptiles (snakes like King cobra, turtles, lizards like Chameleon) have a three-chambered heart with two atria and a single ventricle, often partially divided. However, crocodiles are unique among living reptiles in possessing a complete four-chambered heart, similar to birds and mammals, which allows for complete separation of oxygenated and deoxygenated blood.

The four-chambered heart in crocodiles is an evolutionary adaptation that provides more efficient circulation, particularly beneficial for their active lifestyle and diving habits.

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