O-LevelBiologyTransport in Plants5090/12 · May/June 2023 · Q101 Mark
A herbaceous plant, growing in a nutrient solution, is placed in a well-lit container. Humid air is passed through the container. The diagram shows a section through a part of the plant. [Figure 10.1] The speeds of movement of the fluids in tissues R and S are measured. The humid air is then replaced by dry air and the speeds of movement of the fluids are measured again. Which effect does the change to dry air have on the measurements?
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.
Atissue R: greatly increased upward movement, tissue S: greatly increased downward movement
Btissue R: greatly increased downward movement, tissue S: little change
Ctissue R: little change, tissue S: greatly increased downward movement
Dtissue R: little change, tissue S: greatly increased upward movement
✓ Correct answer
D: tissue R: little change, tissue S: greatly increased upward movement
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 →