Final answer:
Rods and cones are two types of photoreceptors in the retina. Rods are sensitive to dim light and are responsible for peripheral and nighttime vision, while cones respond to bright light and are responsible for color vision.
Step-by-step explanation:
The retina contains two types of photoreceptors: rods and cones. Rods are sensitive to dim light and are primarily responsible for peripheral and nighttime vision, while cones respond to bright light and are responsible for color vision. Rods are more numerous and are distributed throughout the retina, while cones are concentrated in the fovea, the center of the retina where images are focused.