A-LevelBiologyTransport in plants9700/12 · Feb/Mar 2024 · Q291 Mark
A maize seedling was grown in soil that contained lanthanum ions labelled with a chemical that fluoresces under ultraviolet light. The diagram represents what was observed when a section of root was examined using a light microscope with ultraviolet illumination. [Figure 29.1] What is a correct conclusion about the transport of lanthanum ions in maize roots?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
AThe ions are not transported through the apoplast pathway or the symplast pathway.
BThe ions are transported through the apoplast pathway only.
CThe ions are transported through the apoplast pathway and symplast pathway.
DThe ions are transported through the symplast pathway only.
✓ Correct answer
B: The ions are transported through the apoplast pathway only.
Practise more questions on this topic
Oracle Prep sorts past-paper questions by topic, so you can drill Transport in plants and see which topics are most likely to come up next.
Sign up free →