A-LevelBiologyTransport in plantsFeb/Mar 2017Paper 1 Q291 Mark
Which statements correctly describe transport pathways in dicotyledonous plants? 1 In the symplast pathway, water may move through intercellular spaces. 2 The symplast pathway may be blocked by the tonoplast. 3 In the apoplast pathway, water does not move through plasmodesmata. 4 The apoplast pathway may be blocked by the Casparian strip.
A1 and 2
B1 and 4
C2 and 3
D3 and 4
✓ Correct Answer
The correct answer is D: 3 and 4
📋 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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