A-LevelBiologyTransport in plantsFeb/Mar 2019Paper 1 Q261 Mark
Which properties of lignin are important for the function of xylem vessels in the stem of a tall plant, such as a tree? 1 It is inflexible so does not bend easily. 2 It is not permeable to water. 3 It is strong to resist collapse under pressure. 4 It has weaker adhesion to water molecules than cellulose.
A1, 2 and 3
B1, 2 and 4
C1, 3 and 4
D2, 3 and 4
✓ 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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