Final answer:
The retina contains rods and cones, which are types of photoreceptor cells; rods are used for low-light vision and do not detect color, while cones are for color vision and require more light.
Step-by-step explanation:
The layer of the human eye that contains the rods and cones is called the retina. This layer of photoreceptor cells is crucial for vision. The rods in the retina are especially sensitive to low levels of light, which makes them essential for night vision and seeing in dimly lit areas. Whereas the cones function best under higher light levels and are essential for perceiving fine detail and color.
To address the quiz statement, the correct answer is that c. The iris adjusts the amount of light coming into the eye. The iris is the colored part of the eye that contracts or expands to control the size of the pupil, thereby regulating the amount of light that enters the eye. To clarify, rods do not detect color; they are more responsive to shades of grey and are sensitive under low light. Cones, on the other hand, are responsible for color vision and work best under higher light conditions.