Question 23
Sense OrgansWhich of the following is the function of the iris of the mammalian eye?
- A.Closes and opens the eye
- B.Absorbs dangerous rays from sunlight
- C.Regulates the amount of light entering the eye
- D.Bringing light rays to focus on the retina
Show the answer and explanation
Answer: C (Regulates the amount of light entering the eye)
Explanation
The iris changes the size of the pupil, controlling how much light gets into the eye. Focusing is done by the lens and cornea.