A digital catalogue groups the structures of the eye into pairs.
Which pair consists of the light-sensitive receptor cells?
[1]
A
circular muscles and radial muscles
B
rods and cones
C
the sclera and the choroid
D
the cornea and the lens
Markscheme
2.4 The eye Questions
102 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.