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2.4 The eye

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Question 31
H

A student compares two responses of the eye.

Response P follows an increase in light intensity without a change in object distance.

Response Q follows a decrease in object distance without a change in light intensity.

Which combination describes the responses?

[1]
A

P: circular iris muscles contract; Q: ciliary muscles relax

B

P: circular iris muscles contract; Q: ciliary muscles contract

C

P: circular iris muscles relax; Q: ciliary muscles contract

D

P: circular iris muscles relax; Q: ciliary muscles relax

Markscheme

2.4 The eye Questions

  1. GCSE
  2. /Biology
  3. /2.4 The eye

42 exam-style questions on Edexcel GCSE Biology 2.4 The eye, covering 2.4.1 Structure and function of the eye and 2.4.2 Eye defects and their correction. Each one has a worked solution and a mark scheme showing where the marks go.

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