Question

Four chambered heart is found in

1 bird
2 mammals
3 amphibians
4 birds and mammals​

Answer 1

Answer:

4.) Birds as well as mammals

Explanation:

This is because birds and mammals are warm-blooded animals (homeothermic) and they need a constant supply of energy to maintain their body temperature, what so ever the outside temperature may be.

A four chambered heart keeps the oxygenated and deoxygenated bloods separate and hence, more oxygen is supplied to the cells for more respiration and hence more energy.

However, in a 3-chambered heart, there is some mixing of oxygenated and deoxygenated bloods resulting in less oxygen being supplied to the cells for less respiration and hence less energy is released.

Answer 2

Answer:

• 4chambered heart present then, in those animals double circulation takes place ,so  both in  birds and mammals it can occurs ...

because they both are warm blooded and homeothermic .

• amphibians ; are 3 chambered  animals in those,the blood gets mixed
• because they had 2 atrias and 1 ventricle then both oxygenated and deoxygenated  blood mixes...
• and crocodile is neither bird nor mammal but,they had 4 chambered heart.....