A-LevelBiologyTransport in plantsOct/Nov 2018Paper 1 Q181 Mark
The diagram shows a xylem vessel in a root and four adjacent parenchyma cells. As water moves up the xylem vessel, it is replaced by water from cell D. Water in cell D is replaced by water in cell C, resulting in a flow of water from cell A to the xylem. Which cell has the least negative water potential?
A[Cell A]
B[Cell B]
C[Cell C]
D[Cell D]
✓ Correct Answer
The correct answer is A. This question tests the candidate's understanding of transport in plants within the Biologysyllabus. The examiner's mark scheme requires...
📋 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...
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