plumiThe pupil reflex: Edexcel International A Level Biology questions
Edexcel International A Level Biology past-paper questions on 8.2.2 The pupil reflex, 2019–2025, with mark schemes and examiner’s reports where available.
All papers
All years
Q2(a)
The whole paper ↗
Loading the start of the question…
Loading the question…
Open the full PDFQ2(b)(iii)
The whole paper ↗Loading the start of the question…
Loading the question…
Open the full PDFQ1(a)
The whole paper ↗
Loading the start of the question…
Loading the question…
Open the full PDFQ1(b)(ii)
The whole paper ↗Loading the start of the question…
Loading the question…
Open the full PDFQ3(c)
The whole paper ↗
Loading the start of the question…
Loading the question…
Open the full PDFYour answerQ7(a)(i)
The whole paper ↗
Loading the start of the question…
Loading the question…
Open the full PDFQ5(a)(i)
The whole paper ↗
Loading the start of the question…
Loading the question…
Open the full PDFQ5(a)(ii)
The whole paper ↗Loading the start of the question…
Loading the question…
Open the full PDFQ5(a)(iii)
The whole paper ↗Loading the start of the question…
Loading the question…
Open the full PDF
All 9 questions on The pupil reflex, as a list
- October 2023, Unit 5, Q2(a) (4 marks): Describe how the pupil of an eye dilates and contracts in response to changes in light intensity. (4)
- October 2023, Unit 5, Q2(b)(iii) (2 marks): In direct sunlight the diameter of the pupil was 4 mm. In complete darkness the area of the pupil was 38.75 mm2. Calculate the increase in diameter of the pupil
- June 2023, Unit 5, Q1(a) (1 mark): The table shows the mean pupil diameter in different light intensities. Light intensity Pupil diameter / mm bright light 3.35 normal room light 3.86 darkness 6.
- June 2023, Unit 5, Q1(b)(ii) (3 marks): Describe how this change in diameter is brought about by the muscles of the iris. (3)
- October 2021, Unit 5, Q3(c) (1 mark): Which statement describes the response of the muscles in the iris to increasing light intensity? (1) A circular and radial muscles contract B circular and radia
- June 2021, Unit 5, Q7(a)(i) (3 marks): The size of the pupil changes when moving from dim to very bright light. Explain how this change occurs. (3)
- October 2020, Unit 5, Q5(a)(i) (2 marks): Describe the relationship between light intensity and pupil diameter. (2)
- October 2020, Unit 5, Q5(a)(ii) (3 marks): Calculate the amount of incandescent light that can pass through the pupil when the light intensity is 1400 a.u. per m2. Use a value of pi (π) = 3.14 (3) Answer
- October 2020, Unit 5, Q5(a)(iii) (4 marks): Describe how light entering the eye causes the pupil to respond. (4)
Questions, mark schemes and examiner’s reports are © Pearson Edexcel, from their published past papers. Plumi isn’t affiliated with any exam board. Want whole papers? Edexcel International A Level Biology past papers.
The Plumi iPad app also offers exam-style questions with AI feedback on your handwritten working.