A-LevelBiologyTransport in plantsFeb/Mar 2024Paper 1 Q281 Mark

Which statement correctly describes the association between a companion cell and its sieve tube cell?

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.

AThe companion cell provides all of the ATP used for energy-requiring processes in both types of cell.

BThe companion cell controls the active transport of molecules through the sieve plates.

CThe companion cell prevents side-to-side movement of assimilates between sieve tube cells.

DThe companion cell provides a nucleus that controls cellular activities in both types of cell.

✓ Correct Answer

The correct answer is D: The companion cell provides a nucleus that controls cellular activities in both types of cell.

📋 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 Feb/Mar 2024 examination, Paper 1 Variant 2.

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