Question

Give reason why oxygenated and deoxygenated blood are separates in the hearts of mammal

Answer 1

Energy requirements of mammals are higher than other organisms. Thus these animals require a higher and efficient system of transportation of oxygen. Thus oxygenated and deoxygenated blood are separated in the hearts of mammals

Answer 2

Here is your answer
It is necessary in mammals and birds to separate oxygenated and de - oxygenated
blood because this makes their circulatory
system is more efficient and helps in maintaining constant body temperature.