NCERT Exercise 5.1 — Q11 - Life Processes
Question: Describe double circulation of blood in human beings. Why is it necessary?
Answer: **Double circulation:** Blood passes through the heart **twice** during one complete circuit. **1. Pulmonary circulation:** Right Ventricle -> Pulmonary Artery -> **Lungs** (O₂ picked up, CO₂ relea...
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