A-LevelBiologyTransport in plantsOct/Nov 2015Paper 1 Q241 Mark
Sucrose is loaded into companion cells and phloem sieve tube elements by active transport and diffusion using transport proteins and plasmodesmata. Which row shows how sucrose is loaded?
Ainto companion cell into phloem sieve tube element into companion cell into phloem sieve tube element
Binto companion cell into phloem sieve tube element into phloem sieve tube element into companion cell
Cinto phloem sieve tube element into companion cell into companion cell into phloem sieve tube element
Dinto phloem sieve tube element into companion cell into phloem sieve tube element into companion cell
✓ 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...
🔒
Unlock the Examiner's Answer
Sign up for free to reveal the correct answer, the official mark scheme breakdown, and the examiner trap analysis for this question.
Sign Up Free to Unlock →Join thousands of Cambridge students already using Oracle Prep