A-LevelBiologyTransport in plantsMay/June 2021Paper 1 Q261 Mark
In plants, assimilates such as sucrose are loaded from source cells into sieve tube elements. The assimilates are then transported from source to sink. What is needed to transport sucrose from source cells through phloem tissue to sink cells? [Figure 26.1]
Awater potential gradient between the source and the sink AND ATP
BATP only
Chydrostatic pressure gradient between the source and the sink AND ATP
Dhydrostatic pressure gradient between the source and the sink only
✓ Correct Answer
The correct answer is C. 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