WAEC Biology 2007 Question 14

Question 14

Transport in Animals

Which of the following blood vessels have valves?

  1. A.Capillary
  2. B.Artery
  3. C.Vein
  4. D.Arteriole
Show the answer and explanation

Answer: C (Vein)

Explanation

Blood in veins is under low pressure, so veins have valves to stop it flowing backwards.