O-LevelBiologyTransport in Plants5090/12 · May/June 2022 · Q121 Mark
A student set up an experiment to investigate the rate of transpiration in a plant. The student set up two identical sets of apparatus. One was placed in a room at 20 °C with bright light and one in a room at 20 °C in the dark. Which graph shows the student's results?
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.
A[Graph A showing mass decreasing over time for both dark (solid) and bright light (dashed), with bright light decreasing faster]
B[Graph B showing mass increasing then decreasing for bright light (dashed), and decreasing for dark (solid)]
C[Graph C showing mass decreasing for dark (solid), and increasing then decreasing for bright light (dashed)]
D[Graph D showing mass decreasing then increasing for both dark (solid) and bright light (dashed)]
✓ Correct answer
A: [Graph A showing mass decreasing over time for both dark (solid) and bright light (dashed), with bright light decreasing faster]
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