Biology 0610 · IGCSE · Sense organs

Sense organs — practice question

What number of distinct types of cone receptor and rod receptor are found in the human retina?

  • Acone receptor: 1, rod receptor: 1
  • Bcone receptor: 1, rod receptor: 3
  • Ccone receptor: 3, rod receptor: 1
  • Dcone receptor: 3, rod receptor: 3

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