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Science · 2025 · 2 marks
CBSE 2025 · Region 3 · Set 1 · Q23
State the main function of veins in human circulatory system. Why do they not need thick walls?
State the main function of veins in human circulatory system. Why do they not need thick walls ?
Marking-scheme solution
Veins carry deoxygenated blood from different organs and bring it back to the heart.
Because blood flows at low pressure inside veins.
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CBSE Class 10 Science past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.