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3.1 Coordination and control – the nervous system

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Question 7

During a night-time moth survey, a biologist can see the outlines of moths in very low light, but their wing colours appear as shades of grey.

Which statement explains this observation?

[1]
A

Cone cells respond at low light levels but cannot distinguish different colours.

B

Cone cells distinguish colours, but they are found only at the edges of the retina.

C

Rod cells and cone cells both respond, but the brain cannot compare their impulses.

D

Rod cells respond at low light levels but cannot distinguish different colours.

Markscheme

3.1 Coordination and control – the nervous system Questions

  1. GCSE
  2. /Biology
  3. /3.1 Coordination and control – the nervous system

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.

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