Which of the following statements is not true of osmotic process?

Explanation

This Biology question is about the osmotic process. Osmosis is the movement of water molecules from an area of high concentration to an area of low concentration across a selectively permeable membrane. The question asks which statement is not true of osmosis. Option A states that there must be a selectively permeable membrane. This statement is true because osmosis can only occur if there is a selectively permeable membrane, which allows water molecules to move but not solute molecules. Option B states that the two solutions must be of different concentrations initially. This statement is also true because osmosis occurs when there is a difference in solute concentration between the two solutions separated by the membrane. Option C states that osmosis involves only the movement of water molecules. This statement is true because osmosis is the movement of water molecules across a membrane from an area of high concentration to an area of low concentration. Option D states that the two solutions are of equal concentration at the beginning of the experiment. This statement is the one that is not true of osmosis. Osmosis only occurs when there is a difference in solute concentration between the two solutions separated by the membrane. In summary, the correct answer to this question is Option D, which states that the two solutions are of equal concentration at the beginning of the experiment, which is not true of osmosis.