WAEC Biology 2013 Question 12

Question 12

Transport in Animals

Which of the following statements is not correct about the mammalian heart?

  1. A.Oxygenated blood enters the left auricle from the pulmonary vein.
  2. B.The walls of the ventricle are thicker than those of the auricle.
  3. C.Blood passes from the right ventricle to the left auricle through the aorta.
  4. D.The tricuspid valve prevents the back flow of blood into the right auricle.
Show the answer and explanation

Answer: C (Blood passes from the right ventricle to the left auricle through the aorta.)

Explanation

The right ventricle pumps blood to the lungs through the pulmonary artery; the aorta leaves the left ventricle.