-3-Which part of the eye contains photoreceptor cells? a) Lens b) Retina c) Sclera d) Optic nerve

The correct answer is b) Retina.The retina is the part of the eye that contains photoreceptor cells, which are responsible for converting light into electrical signals that can be processed by the brain to create visual images. The retina contains two types of photoreceptor cells: rods, which are responsible for vision in low light conditions, and cones, which are responsible for color vision and visual acuity. The lens, sclera, and optic nerve do not contain photoreceptor cells.