Final answer:
Cone cells are responsible for color vision in the human eye, while rods are sensitive to low light levels and only detect shades of gray.
Step-by-step explanation:
The photoreceptor cells of the eye responsible for color/photopic vision are called cone cells. There are two types of photoreceptor cells in the retina: rods and cones. Rods are more sensitive to light, but they do not detect color; instead, they are responsible for vision in low light conditions and can only detect shades of grey. In contrast, cones respond to higher-intensity light and enable us to perceive color. Each cone contains one of three different photopigments, which are sensitive to different wavelengths of light, allowing for the perception of a range of colors.
When we consider the statement provided in your question regarding the human eye, the false statement is (a) Rods detect color, while cones detect only shades of gray. This is incorrect because, as mentioned, rods detect shades of gray, particularly in low light, and cones are responsible for detecting color when there is sufficient light.