Suppose someone's retina contains only rods,no cones.What should we expect to find?
A)This person has no perception of depth or distance.
B)This person has trouble seeing anything in faint light.
C)This person has poor perception of visual motion.
D)This person has no perception of color.

Question

Suppose someone's retina contains only rods,no cones.What should we expect to find?​
A)This person has no perception of depth or distance.
B)​This person has trouble seeing anything in faint light.
C)​This person has poor perception of visual motion.
D)​This person has no perception of color.

Quizplus · Accepted Answer

Cones are responsible for color vision, so a retina containing only rods would mean no perception of color. However, this person would still be able to see in dim light and have some perception of visual motion. Depth and distance perception are also not solely dependent on cones, so this would not be affected.

Suppose Someone's Retina Contains Only Rods,no Cones