Receptor cells that work best in bright light and enable you to see color.

Receptor cells that work best in bright light and enable you to see color.

• A. Cone (cells)
• B. Rod (cells)
• C. Iris
• D. Retina

Answer: (A)

Cones are the receptor cells that work best in bright light and enable you to see color. They respond to high levels of light and come in three types tuned to red, green, and blue wavelengths, which mix to create the colors you perceive. In bright conditions, cones provide sharp, color-rich vision. In dim light, cones become less active and rods take over, but rods detect light poorly and don’t convey color. The iris isn’t a receptor; it adjusts pupil size. The retina contains the photoreceptors but is the tissue that houses them, not the receptor type itself.

Cones are the receptor cells that work best in bright light and enable you to see color. They respond to high levels of light and come in three types tuned to red, green, and blue wavelengths, which mix to create the colors you perceive. In bright conditions, cones provide sharp, color-rich vision. In dim light, cones become less active and rods take over, but rods detect light poorly and don’t convey color. The iris isn’t a receptor; it adjusts pupil size. The retina contains the photoreceptors but is the tissue that houses them, not the receptor type itself.