AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
Arteries carry blood away from the heart under high pressure. Thick, elastic walls help them withstand and maintain this high blood pressure without bursting.
The examiner expects two linked points: (1) arteries carry blood at high pressure from the heart, and (2) thick elastic walls withstand that pressure. Note: this topic is from the Life Processes chapter (Chapter 6, circulatory system), though the provided passages don't directly cover it — answer from core CBSE knowledge.