O-LevelBiologyCoordination & Response5090/11 · May/June 2018 · Q211 Mark
The diagram shows a section through an eye. Which part is the receptor for the stimulus that results in a change in the size of the pupil?
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.
AA
BB
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DD
✓ Correct answer
D: D
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