Q. Which option correctly gives the number of heart chambers in Pisces, Amphibia and Aves respectively?
A) 3, 2 and 4
B) 2, 4 and 3
C) 4, 3 and 2
D) 2, 3 and 4
Explanation
Fishes have a two-chambered heart, amphibians a three-chambered heart and birds a four-chambered heart.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.