Question

what are photoreceptors​

Answer 1

Answer:

A structure in aliving organism, especially a sensory Cell pr sense that responds to light falling on it.

Answer 2

• The retina has two types of photoreceptors: cones and rods.
• Daytime vision is controlled by the cones, whereas night vision is controlled by the rods. L, M, and S types of cones are available (for long, middle, and short wavelength).
• Color vision is possible because each cone type reacts to a distinct part of the visible spectrum. Cones and rods have different spectral sensitivities.
• Light-detecting photoreceptors are specialized cells.
• The outer nuclear layer, which houses the cell nuclei, the inner segment, which houses the cell machinery, and the outer segment, which contains photosensitive pigment, make up these layers.
• A rod's outer segment is made up of discrete discs saturated with rhodopsin molecules, whereas a cone's outside segment is made up of a series of folds containing similar photosensitive molecules.
• Photons are absorbed by the outer segment, resulting in an electrochemical transfer via the cells and retinal nerve fibers.