alleryArteries have thick elastic walls because the blood is under:
AHigh pressure
BHigh pulsation
CHigh proportion
DHigh protection
Answer & Solution
Correct answer: A. High pressure
1. The blood has just left the heart.
2. Veins do not need such walls.
3. It is under high pressure.
_Source: syllabus Science, Ch 6 'Life Processes'_
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