Amphibians (like frogs, salamanders) typically have a three-chambered heart consisting of two atria and one ventricle. Most reptiles (like lizards, snakes, turtles) also possess a three-chambered heart with two atria and a single ventricle, although the ventricle is often partially divided by a septum, reducing mixing of oxygenated and deoxygenated blood. Crocodiles are an exception among reptiles, having a four-chambered heart.
Which of the following classes of animals has/have three-chambered heart?
Asked in UPSC CDS 1 2018 · Topic: Circulatory System (Comparative Circulatory Systems in Animals (e.g., Fish, Amphibians, Reptiles, Birds, Mammals))
More Biology questions
- Which one of the following animals has a three-chambered heart?
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- Given below are two Statements, one is labelled as Assertion (A) and other is labelled as Reason (R). Assertion (A): Amphibians can tolerate mixing of oxygenated and deoxygenated blood. Reason (R): Amphibians are animals with two chambered heart. Select the correct answer using the codes given below :
