Question

Which of the following is not correct for rod cells?

• A. Very sensitive to the low level of illumination
• B. Stimulated by the wavelength of visible light
• C. Mostly located in the centre of retina
• D. Regenerates light-sensitive pigment rapidly

Answer 1

The correct option is C

Mostly located in the centre of retina

Rod cells are more numerous than the cone cell and are at the periphery of the retina. They are very sensitive to the low level of illumination and are stimulated by the wavelength of visible light, except the red light. They rapidly regenerate light-sensitive pigments, therefore can perceive flicker well. Whereas cones are less numerous and are located at the centre of the retina.