Question

Examine the diagram of the two cell types A and B given below and select the correct option.

• A. Cell-A is the rod cell found evenly all over retina.
• B. Cell-A is the cone cell more concentrated in the fovea centralis.
• C. Cell-B is concerned with colour vision in bright light.
• D. Cell-A is sensitive to low light intensities.

Answer 1

The correct option is B Cell-A is the cone cell more concentrated in the fovea centralis.

Cell-A is the cone cell more concentrated in the fovea centralis, the region of keenest vision. It is located in the centre of the retina, in direct line with the centre of the lens and cornea. The acuity of an animal's vision depends on the density of cones in the fovea. Cell-B is the rod cell found in the peripheral parts of the retina. Rods have high sensitivity receptors for dim light.