Question
Fri July 22, 2011 By: Priya Prasad

Name the two types of transport system in humans? Name one animal having single circulation of blood and another having double circulation of blood? Why is it nesessary to seperate oxygenated blood and deoxygenated blood in mammals and fish?

Expert Reply
Sun July 24, 2011
i) Pulmonary and systemic circulation
ii) Single circulation - fish, double circulation - humans, rats
iii) Mammals and birds need high energy requirements. More energy can be released if mixing of blood is prevented.
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