Which statement about rod cells is true according to the material?

• A. They distinguish colors in daylight
• B. They are more sensitive to light and do not distinguish colors
• C. They provide high color resolution
• D. They are absent in nocturnal mammals

Answer: (B)

Rod cells are the retina’s photoreceptors for dim-light vision. They are highly sensitive to light, which lets you see in very low illumination, but they do not distinguish colors; color perception comes from cone cells that require brighter light. Because many rods share a single neural pathway, they provide high sensitivity but lower spatial and color resolution. Nocturnal mammals have rods and rely on them for night vision. So the true statement is that rods are more sensitive to light and do not distinguish colors.