Question

The pair of eye parts responsible for admitting different amount of light in to the eyes is ______.

Options

• Iris and pupil

• Ciliary muscles and pupil

• Retina and Iris

• Ciliary muscles and cornea

Answer 1

The pair of eye parts responsible for admitting different amount of light in to the eyes is iris and pupil.

Explanation:

The iris is a muscular diaphragm that controls the size of the pupil. The pupil is the opening through which light enters the eye. In bright light, the iris contracts the pupil to reduce light entry, and in dim light, it expands the pupil to allow more light. Thus, the iris and pupil together regulate the amount of light entering the eye.