Question

What is the relative density and location of the rod and cone cells in a human eye?

a) Rods are more concentrated in the macula, cones are spread across the retina.
b) Cones are more concentrated in the fovea, rods are spread across the retina.
c) Rods are more concentrated in the optic nerve, cones are spread across the retina.
d) Cones are more concentrated in the choroid, rods are spread across the retina.

Answer 1

Cones are concentrated in the fovea for high-resolution color vision in bright light, while rods are distributed throughout the rest of the retina for peripheral and low-light vision.

Step-by-step explanation:

The correct answer to the question of the relative density and location of rod and cone cells in the human eye is: Cones are more concentrated in the fovea, while rods are spread across the retina. Specifically, the fovea is the region in the center back of the eye that is responsible for acute vision and has a high density of cones. This is because cones respond to bright light and their primary role is in daytime, color vision. On the other hand, rods are strongly photosensitive and are located in the outer edges of the retina. They detect dim light and are primarily used for peripheral and nighttime vision.