The function of iris in the eyes of frog is to

Question

The function of iris in the eyes of frog is to (A) alter the size of pupil (B) move nictitating membrane (C) refract light rays (D) move the lens forward and backward

Tardigrade Admin · Accepted Answer

At the juncton of sclera and cornea, the vascular coat sharply bends into the cavity of eye ball to form a thin and coloured portion known as iris. The smooth muscles found in iris, regulate the amount of light entering the eye ball by varying the size of the pupil.

Q. The function of iris in the eyes of frog is to

alter the size of pupil

move nictitating membrane

refract light rays

move the lens forward and backward

At the juncton of sclera and cornea, the vascular coat sharply bends into the cavity of eye ball to form a thin and coloured portion known as iris. The smooth muscles found in iris, regulate the amount of light entering the eye ball by varying the size of the pupil.