JKSSB Mock Tests

Identify the structure that controls the size of the pupil.

A. Vitreous humour
B. Iris
C. Ciliary muscles
D. Cornea
Answer: Option B
Solution (By JKSSB Mock Tests Team)
Anatomically, the iris is a highly pigmented, dynamic muscular ring positioned in the eye that reflexively dilates and strictly constricts to carefully physically regulate the exact amount of ambient light allowed to enter the pupil.
This Question Belongs to: General science Biology set 1
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