Question

8. What is the special feature present in a human heart which does not allow mixing of blood when oxygen-rich
and carbon dioxide-rich blood reach the heart?​

Answer 1

Answer:

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septum

The presence of septum in the heart does not allow the 'mixing of oxygen-rich' and 'carbon dioxide-rich bloods'. Explanation: As blood is carried into the heart from different 'parts of the body', this deoxygenated blood is rich in carbon dioxide.

Answer 2

Answer:

The presence of septum in the heart does not allow the 'mixing of oxygen-rich' and 'carbon dioxide-rich bloods'. Explanation: As blood is carried into the heart from different 'parts of the body', this deoxygenated blood is rich in carbon dioxide.