Question

what need of four chamber heart in mannals? why fish have only two chamber heart

Answer 1

hala,

mammals have 4 chambered heart to prevent this O2 n CO2 rich in blood n fr mixing as purification in heart n in d case of fishes they have heart in there gills.

hope u understood!! 

Answer 2

Mammals are highly sensitive to temperature and they have four chambers in heart to prevent mixing of oxygenated and deoxygenated blood in their body as they cant tolerate such mixing and temperature change


So to maintain their body temperature they have four chambers


Whereas

Fishes have two chamber means they can tolerate mixing of oxygenated and deoxygenated blood means they can tolerate such highrr temperature change in their body

That it


Hope it helps


Thnks

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