A-LevelBiologyCell membranes and transport9700/12 · Oct/Nov 2025 · Q201 Mark
The stalk of a dandelion flower is a hollow tube called a scape. Pieces of the scape are cut as shown by the dotted lines and placed in sucrose solutions of different water potentials. [Diagram showing a cross-section of a scape and a cut piece] Which diagram shows the piece that is placed in the sucrose solution with the highest water potential?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
A[Diagram A showing outer cells and inner cells are turgid]
B[Diagram B showing outer cells are turgid and inner cells are flaccid]
C[Diagram C showing outer cells are flaccid and inner cells are turgid]
D[Diagram D showing outer cells and inner cells are flaccid]
✓ Correct answer
A: [Diagram A showing outer cells and inner cells are turgid]
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