Why is four chambered heart more evolved than three chambered heart?Give reason.
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it is used for the double circulation and heart is the only organ which done this.
it carry oxygenated and deoxygented blood both to lungs to purify and heart to circulate the blood for use.
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While , in 4 chambered heart ,there are 2auricles and 2 ventricles. In 3 chambered heart , both oxygenated and deoxygenated blood gets mixed in ventricle. ... Due to mixing of blood ,there is decrease in efficiency of heart and so, 3chambered heart is less efficient than 4chambered heart .
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