AP BIOLOGY

Detailed explanation-1: -Pupil: The pupil is the opening at the center of the iris through which light passes. The iris adjusts the size of the pupil to control the amount of light that enters the eye.

Detailed explanation-2: -Although the eye’s pupil is indeed a hole in the front surface of the eye, this hole is covered in the front by a strong, transparent coating called the cornea and in the back by a fibrous, transparent object called the lens.

Detailed explanation-3: -The small opening in the iris of an eye is called a pupil. The pupil is used to control the amount of light that enters according to the surrounding light conditions.