A-LevelBiologyTransport in plants9700/12 · Oct/Nov 2017 · Q271 Mark

The diagram shows a xerophytic leaf in different conditions, P and Q. [Figure 27.1 - diagrams of xerophytic leaves in conditions P and Q] Which statements about the cells in layer X of the leaf in each of the conditions P and Q are correct? 1 less negative water potential in P than Q, 2 cells may be turgid in P and plasmolysed in Q, 3 cells less turgid in P than Q, 4 no net diffusion of water into X in either P or Q

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A1, 2, 3 and 4

B1, 2 and 4 only

C1 and 4 only

D2 and 3 only

✓ Correct answer

B: 1, 2 and 4 only

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Topic: Transport in plants, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, Oct/Nov 2017 Paper 1 Variant 2, question 27.

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