Solve this:

Solve this: a) In birds and mammals the heart is divided into four chambers compared to fishes and amphibia. Justify.

Double circulation system prevents mixing of oxygenated and deoxygenated blood with each other. Birds and mammals are warm blooded. This warm body temperature helps to carry out body processes more efficiently. Maintaining the constant temperature inside the body requires huge amount of energy. In fish’s heart blood passes only once in one complete circuit. This type of blood circulation is known as single circulation and heart is known as single circuit heart. Hope this information helps,Regards.
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