A-LevelBiologyTransport in plantsOct/Nov 2021Paper 1 Q241 Mark
Which features of companion cells are essential to their function? 1 They are connected to the sieve tube elements by plasmodesmata. 2 They have a thicker cell wall than a sieve tube element. 3 They contain a nucleus and mitochondria.
A1 and 2
B1 and 3
C1 only
D2 and 3
✓ Correct Answer
The correct answer is B. 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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