Trend setter CBSE TEST PAPER-02 SCIENCE & TECHNOLOGY (Class-10) Chapter 6 : Life Process 1. Point out of differences between an artery and vein. (1 mark) Ans: Any one: Artery 1. Vessels which carry blood from the heart to various body parts 2. Arteries carry oxygenated blood from the heart except pulmonary artery 3. Arteries have thick elastic muscular walls 4. Valves are absent 5. Blood flows under high pressure Vein 1. Vessels which carry blood from the various body parts to the heart 2. Veins carry deoxygenated blood from the various body parts except pulmonary vein 3. Veins have thin non elastic walls 4. Valves are present to prevent the backward flow of blood 5. Blood flows under low pressure 2. Write the two functions of kidneys. Ans. Osmoregulation and excretion. 3. Name the largest artery in human body. (1 mark) Ans: The largest artery in the human body is the aorta. It carries oxygenated blood to the whole body from the h
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