Which statement describes a cause of long-sightedness?
The eyeball is too long, so light focuses in front of the retina.
The eyeball is too short, so light focuses behind the retina.
The cone cells are faulty, so some colours cannot be seen.
The pupil is too small, so not enough light reaches the retina.
135 exam-style questions on OCR GCSE Biology 3.1 Coordination and control – the nervous system, covering 3.1.1 Structure of the nervous system, 3.1.2 Coordinated response, 3.1.3 The reflex arc, 3.1.4 Structure of the eye, 3.1.5 Defects of the eye, 3.1.6 Structure and function of the brain, 3.1.7 Difficulties of investigating brain function, and 3.1.8 Limitations in treating nervous system damage. Each one has a worked solution and a mark scheme showing where the marks go.