Biology 0610 · IGCSE · Coordination and response

Coordination and response — practice question

The flow diagram illustrates the route by which pupil diameter is reduced when the light is bright. bright light → receptor cell → X → central nervous system → neurone → reduced pupil diameter What does X stand for?

  • Airis
  • Bmotor neurone
  • Crelay neurone
  • Dsensory neurone

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