A-LevelBiologyTransport in plantsMay/June 2023Paper 1 Q291 Mark

The diagram shows the outline of three xerophytic leaves of the same type in three different conditions, P, R and S. [Figure 29.1] Which description of the water potential of the cells in layer Y is correct?

Q: What topic does this question test?

This question tests Transport in plants in A-Level Biology (syllabus code 9700). It is worth 1 mark.

AP: higher than R and S; R: lower than P and S; S: lower than P

BP: higher than S; R: lower than P; S: higher than P

CP: lower than R; R: higher than S; S: higher than R

DP: lower than R and S; R: higher than P; S: lower than P

✓ Correct Answer

The correct answer is A: P: higher than R and S; R: lower than P and S; S: lower than P

📋 Examiner Report & Trap Analysis

Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...

🎯 Mark Scheme Breakdown

Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.

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About This A-Level Biology Question

Topic

This multiple-choice question tests Transport in plants in A-Level Biology (syllabus code 9700). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Biology May/June 2023 examination, Paper 1 Variant 2.

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