A-LevelBiologyCell membranes and transportMay/June 2015Paper 1 Q31 Mark

What is the function of plasmodesmata in plant cells?

Q: What topic does this question test?

This question tests Cell membranes and transport in A-Level Biology (syllabus code 9700). It is worth 1 mark.

Ato act as a barrier to water soluble substances

Bto allow active transport of ions and sucrose between cells

Cto allow the symplastic movement of substances between cells

Dto enable cells to recognise each other

✓ Correct Answer

The correct answer is C: to allow the symplastic movement of substances between cells

📋 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 Cell membranes and transport in A-Level Biology (syllabus code 9700). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Biology May/June 2015 examination, Paper 1 Variant 2.

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