In which vertebrate oxygenated and deoxygenated blood gets mixed?
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.
Generally, blood vessels which carry oxygenated blood are called ___ and blood vessels which carry deoxygenated blood are called ___
The artery which carries deoxygenated blood is ………………….. and the vein which carries oxygenated blood is …………………………