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ORCHIDS The International School

Human Eye

1.Mention the Difference Between Rod and Cone Cells?

The differences between rod and cone cells are as follows—

Rod cells Cone cells
Rod cells are more in number. Cone cells are fewer in number than rod cells.
Do not give colour vision. Responsible for colour vision.
Present at the edges of the retina. Present at the periphery of the retina.

Human eye

2.What Are Rhodopsin and Iodopsin?

  • Both rhodopsin and iodopsin are pigments that are present in the human eye.
  • Rhodopsin is the pigment in rod cells, and iodopsin is the pigment in cone cells.
  • The lack of these pigments causes night blindness.
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