A-LevelBiologyCell membranes and transportFeb/Mar 2021Paper 1 Q151 Mark
Diagram 1 and diagram 2 show how the transverse section through a leaf changes when the leaf is moved from solution X to solution Y. [Diagram 1 and Diagram 2 showing leaf sections in solutions X and Y] Which row describes the water potential of the leaf cells and surrounding solutions in diagram 2 compared with diagram 1?
Awater potential of leaf cells in diagram 2 compared with water potential of leaf cells in diagram 1: less negative
water potential of solution Y compared with water potential of solution X: less negative
Bwater potential of leaf cells in diagram 2 compared with water potential of leaf cells in diagram 1: less negative
water potential of solution Y compared with water potential of solution X: more negative
Cwater potential of leaf cells in diagram 2 compared with water potential of leaf cells in diagram 1: more negative
water potential of solution Y compared with water potential of solution X: less negative
Dwater potential of leaf cells in diagram 2 compared with water potential of leaf cells in diagram 1: more negative
water potential of solution Y compared with water potential of solution X: more negative
✓ Correct Answer
The correct answer is A. This question tests the candidate's understanding of cell membranes and transport 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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