Q. A four chambered heart is found in which of the following?
Answer: mammals & Birds
Notes: Archosaurs (crocodilians and birds) and mammals show complete separation of the heart into two pumps, for a total of four heart chambers;

This question is part of 40000+ General Studies MCQ Series Course on GKToday Android app. Question Number: 19 in 31. Human Body - Blood, Circulation and Immune System in above course in App.