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WAEC Biology 2023 Question 10

Question 10

Cell and Its Environment

An example of a process that involves osmosis is the

  1. A.movement of digested food from ileum into blood capillaries.
  2. B.translocation of starch from leaves to all parts of a plant.
  3. C.reabsorption of food nutrients from the kidney into blood capillaries.
  4. D.movement of water from root hairs into cortical cell.
Show the answer and explanation

Answer: D (movement of water from root hairs into cortical cell.)

Explanation

Osmosis is the movement of water through a partially permeable membrane from a dilute to a more concentrated solution, as when water passes from root hairs into cortex cells. The other options move dissolved food, not water.