AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
The left ventricle pumps oxygenated blood to the entire body through the aorta, requiring much greater pressure. The right ventricle pumps blood only to the nearby lungs (a shorter distance, lower pressure). Therefore, the left ventricle needs thicker, more muscular walls to generate the higher force needed.
Examiners look for two key points: (1) the destination of blood from each ventricle — whole body vs. lungs, and (2) the link between distance/pressure and wall thickness. Mention "greater pressure" or "more force" explicitly to secure both marks. This question is from the chapter on Life Processes (Chapter 6, circulatory system).