A student makes two statements.
Statement P: The iris controls how much light enters the eye.
Statement Q: The lens contains the cells that detect different colours.
Which assessment of the statements is correct?
P is correct; Q is incorrect because rod cells are in the retina.
P is incorrect because the cornea controls light entry; Q is correct.
P is incorrect because the retina controls light entry; Q is correct.
P is correct; Q is incorrect because cone cells are in the retina.
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.