Textbook Question
You are at a park watching some deer 35 feet away from you. A friend taps you on the shoulder to ask a question. As you turn to look at your friend, who is standing just 2 feet away, what changes would your eyes undergo?
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15. The Special Senses
Rods, Cones, and Light
Multiple Choice
Which type of photoreceptor is responsible for black, white, and gray vision in the human eye?
A
Bipolar cells
B
Rods
C
Cones
D
Ganglion cells
Verified step by step guidance1
Understand the function of photoreceptors in the human eye: Photoreceptors are specialized cells in the retina that respond to light. There are two main types: rods and cones.
Identify the role of rods: Rods are responsible for vision in low light conditions and are sensitive to black, white, and shades of gray. They do not detect color.
Identify the role of cones: Cones are responsible for color vision and function best in bright light. They are sensitive to different wavelengths corresponding to colors.
Differentiate between other retinal cells: Bipolar cells and ganglion cells are not photoreceptors. They are involved in the processing and transmission of visual information from photoreceptors to the brain.
Conclude that rods are the photoreceptors responsible for black, white, and gray vision, as they are specifically adapted for low-light and non-color vision.
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