Which of the following is the light-sensitive portion of the human eye?

Correct option is A

Sol. The retina is the light-sensitive layer at the back of the eye that contains photoreceptor cells (rods and cones). It converts light into electrical signals, which are sent to the brain via the optic nerve.
Explanation of Options:
· (a) Retina: Correct answer; contains photoreceptors for vision.
· (b) Conjunctiva: A thin membrane covering the front of the eye, not light-sensitive.
· (c) Cornea: Transparent front layer of the eye that focuses light but lacks photoreceptors.
· (d) Sclera: The white, protective outer layer of the eye, not involved in vision.