Question

In describing the distribution of photoreceptors on the retina, which of the following statements is true?

a) Both rods and cones can regenerate if damaged.

b) The optic disc contains more photoreceptors than any other region of the retina, making it the region of highest visual acuity.

c) Cones are more concentrated on the fovea, providing high visual acuity in the center of vision.

Answer 1

The true statement about the distribution of photoreceptors on the retina is that cones, which enable high visual acuity, are concentrated in the fovea, the central region of the retina.

Step-by-step explanation:

In describing the distribution of photoreceptors on the retina, the true statement is c) Cones are more concentrated on the fovea, providing high visual acuity in the center of vision. The fovea is the area with the highest density of cones, which are responsible for high-resolution, color vision in bright light conditions. The cones' concentration in the fovea allows for the sharpest visual acuity at the center of our visual field. In contrast, rods, which function better in low light and are responsible for peripheral vision, are distributed throughout the rest of the retina, particularly at the edges.