| Date | May 2010 | Marks available | 1 | Reference code | 10M.1.HL.TZ1.32 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 1 |
| Command term | Determine | Question number | 32 | Adapted from | N/A |
Question
The diagram below shows part of the vascular system of a dicotyledonous plant. Which process is indicated by the arrows?
A. Passive translocation of sucrose from the sink to the source in the phloem
B. Active translocation of sucrose from the source to the sink in the phloem
C. Passive translocation of sucrose from the sink to the source in the xylem
D. Active translocation of sucrose from the source to the sink in the xylem
Markscheme
B
Examiners report
The options could have been worded more clearly eg. Active translocation of sucrose in the phloem from the source to the sink. Nevertheless, this question turned out to be a very good discriminator.
