Recall that cats-and other nocturnal predators-have a greater number of rod cells in their eyes compared to cone cells. What would you predict about the color vision of cats?
A)Because of the increased number of rod cells, cats have excellent color vision.
B)Because of the decreased number of cone cells, cats have excellent color vision.
C)Because of the decreased number of cone cells, cats have (relatively)poor color vision.
D)Cats have (relatively)poor color vision, but this is independent of the number of rod or cone cells.

Question

Quizplus · Accepted Answer

Cone cells are responsible for color vision, so a decreased number of cone cells in cats means that they have (relatively) poor color vision. The increased number of rod cells helps with night vision, but does not contribute to color vision.

Recall That Cats-And Other Nocturnal Predators-Have a Greater Number of Rod