WAEC BIOLOGY 2003 : Which of the following is the function of the irisof the mammalian eye?

Which of the following is the function of the irisof 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 raysto focus on the retina

Answer : Regulates the amount of light entering the eye

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