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Biology

Blood Capillary is a

  1. Broad tube
  2. Artery with thick wall
  3. Vein with large lumen
  4. Narrow tube made up of endothelium only

Circulatory System

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Answer

Narrow tube made up of endothelium only

Reason — Blood capillary is narrow blood vessel whose walls have a single layer of cells called endothelium.

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