Multiple choice

Which of the following vessels is/are present in a human body?

  1. Capillaries

  2. Xylem

  3. Phloem

  4. Spleen
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A Correct answer
Explanation

On reaching the organ or tissue, the artery divides into smaller and smaller vessels to bring the blood in contact with all the individual cells. The walls of the small vessels are one-cell thick and are called capillaries. Exchange of material between the blood and surrounding cells takes place across this thin wall. The capillaries then join to form veins that take blood away from organ or tissue.

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