A person walks from a dim room into bright sunlight.
Which change reduces the amount of light reaching the retina?
[1]
A
The iris makes the pupil larger.
B
The iris makes the pupil smaller.
C
The lens becomes more transparent.
D
The lens becomes more curved.
Markscheme
2.4 The eye Questions
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.