Which pair of animal groups has oxygenated an | vedclass

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(B) Birds and mammals possess a four-chambered heart,consisting of two atria and two ventricles. This anatomical structure ensures that oxygenated blo

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Birds and mammals

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(B) Birds and mammals possess a four-chambered heart,consisting of two atria and two ventricles. This anatomical structure ensures that oxygenated blood (from the lungs) and deoxygenated blood (from the body tissues) are completely separated within the heart,preventing any mixing. In contrast,amphibians and most reptiles have three-chambered hearts (or incomplete four-chambered in crocodiles),which leads to the mixing of oxygenated and deoxygenated blood.

Which pair of animal groups has oxygenated and deoxygenated blood in the heart separately?

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