A gardener can see plants at the far end of a greenhouse clearly but cannot read the small print on a seed packet held close to the eyes. An optician prescribes spectacles with a power of +2.0 D.
Explain the cause of the blurred near vision and how the spectacles correct it.
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.