An animal having double circulation in a three-chambered heart is :(a) fish(b) snake(c) deer(d) sparrow
Which of these statements are correct? (i) All vertebrates have four-chambered hearts. (ii) Deoxygenated and oxygenated blood are separated in animals with high energy needs. (iii) Fishes have double circulation.
Why do humans have four chambers and have double circulation ?