What is the main advantage of double circulation in humans?
Answer and explanation
Correct answer: Mixing of oxygenated and deoxygenated blood is reduced
In double circulation, blood passes through the heart twice during one complete journey: once between the heart and lungs, and once between the heart and the rest of the body. The four-chambered human heart keeps oxygenated and deoxygenated blood largely separate and pumps oxygen-rich blood efficiently to tissues. Therefore A is correct; the other options contradict digestion, blood composition or gas exchange.
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What is the correct answer to this question?
Mixing of oxygenated and deoxygenated blood is reduced
Why is this the correct answer?
In double circulation, blood passes through the heart twice during one complete journey: once between the heart and lungs, and once between the heart and the rest of the body. The four-chambered human heart keeps oxygenated and deoxygenated blood largely separate and pumps oxygen-rich blood efficiently to tissues. Therefore A is correct; the other options contradict digestion, blood composition or gas exchange.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Life Processes.
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