O-LevelBiologyCell Biology5090/11 · May/June 2015 · Q31 Mark

The diagram shows three plant cells labelled P, Q and R. The arrows show the direction of water movement by osmosis. [Figure 3.1] What is the correct order of water potential in the cells, from the highest to the lowest?

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Ahighest: P, middle: Q, lowest: R

Bhighest: P, middle: R, lowest: Q

Chighest: Q, middle: P, lowest: R

Dhighest: R, middle: P, lowest: Q

✓ Correct answer

C: highest: Q, middle: P, lowest: R

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Topic: Cell Biology, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2015 Paper 1 Variant 1, question 3.

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