Question

There are two types of light-sensitive cells in the human eye:

1. Where are they found?
2. What is each type called?
3. To what is each type of cell sensitive?

Answer 1

1. The two types of light-sensitive cells are found in the retina.
2. They are called rods and cones.
3. Rods are sensitive to dim light, and cones are sensitive to bright light and colours.