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Class 10 Science Medium Mcq English Medium

The smallest blood vessels, with walls only one cell thick, where exchange of materials between blood and cells occurs, are called:

Question
The smallest blood vessels, with walls only one cell thick, where exchange of materials between blood and cells occurs, are called:
Arteries
Veins
Capillaries
Lymph vessels
Answer
Capillaries
Detailed Explanation
Capillaries are the smallest vessels with one-cell-thick walls, allowing exchange of materials between blood and surrounding cells.
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