Question

The photoreceptor cells of the eye are located in the

• A. Sclera
• B. Iris
• C. Retina
• D. Optic nerve

Answer 1

The correct option is C

Retina

The correct option is C

Explanation of the correct option:

1. A photoreceptor cell is a specialized type of neuron found in the retina that is capable of phototransduction.
2. The retina contains two types of photoreceptors, rods, and cones.
3. The rods are more numerous and are more sensitive than the cones.
4. However, they are not sensitive to color.
5. The cones provide the eye's color sensitivity and they are much more concentrated in the central yellow spot known as the macula.

Explanation of the incorrect options:

Option A

The sclera provides structure, protection, and strength to the eye. It is the white outer coating of fibrous tissue surrounding the iris. Hence, this is not the correct answer.

Option B

Iris is a thin, pigmented structure that can regulate the amount of light that can enter the retina. Hence, this is not the correct answer.

Option D

The optic nerve carries the image formed on the retina to the brain in the form of an electrical signal.

Final answer: The photoreceptor cells of the eye are located in the Retina.