Author Question: The reason for a blind spot in the visual field is that A) rods are less sensitive to light than ... (Read 46 times)

kodithompson · **on:** Jun 22, 2018

The reason for a blind spot in the visual field is that

A) rods are less sensitive to light than are cones.
B) blood vessels collect together and enter the eye at the blind spot.
C) the lens cannot focus all of the visual field onto the retina.
D) retinal cells die with age and overuse, resulting in blind spots.
E) there are no photoreceptors in the retina where the axons exit the eye.

Question 2

A key function of rod photoreceptors is to

A) detect colors.
B) detect fine details in the visual field.
C) detect light under low levels of illumination.
D) detect light under high levels of illumination.
E) detect the texture of the visual scene.

wtf444 · **Reply #1 on:** Jun 22, 2018

Answer to Question 1

Answer: E

Answer to Question 2

Answer: C
Rationale: A key function of rod photoreceptors is to detect light under low levels of illumination.