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JAMB Biology 1991 Question 25

Question 25

Cell and Its Environment

Use the figure (U-tube with weak sugar solution in X and strong sugar solution in Y, separated by a semi permeable membrane) to answer: After 30 minutes, the level of sugar solution in the above figure will

Diagram for this question
  1. A.rise in X only
  2. B.rise in Y only
  3. C.be the same in X and Y
  4. D.fall in Y
Show the answer and explanation

Answer: B (rise in Y only)

Explanation

Water moves by osmosis from the weak solution (X) into the strong solution (Y), so the level in Y rises.