Question

In the human eye, most people have ______ types of cones that perceive ________

a) 2, color and brightness
b) 3, color and detail
c) 4, light and darkness
d) 1, color and depth

Answer 1

The human eye typically has three types of cones for perceiving color and detail, enabling trichromatic color vision.

Step-by-step explanation:

In the human eye, most people have three types of cones that perceive color and detail. This configuration is known as trichromatic color vision. The eye has four types of light receptors in total: one type is the rods, which are responsible for night vision, peripheral vision, and motion detection. The other three types are the color-sensitive cones, each type being maximally responsive to a different wavelength of light - short (S cones), medium (M cones), and long (L cones). These cones are concentrated in the central region of the retina, called the fovea, and allow for high-resolution color vision in bright light conditions.