A-LevelBiologyTransport in plantsOct/Nov 2018Paper 1 Q271 Mark
Which statement correctly describes an event in the process of mass flow in phloem sieve tube elements?
AAny part of a plant where sucrose is loaded into a sieve tube element is called a sink.
BLoading sucrose into a sieve tube element increases the water potential inside it.
CMass flow in the phloem is a passive process occurring at the same rate as diffusion.
DSucrose moves down a hydrostatic pressure gradient in the phloem from source to sink.
✓ Correct Answer
The correct answer is D. 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