Question

Part of eye controlling amount of light entering is

• A. Iris
• B. Cornea
• C. Ciliary body
• D. Suspensory ligament

Answer 1

Answer: (A)

Iris

A. Iris is a opaque and pigmented structure in eye. It is visible as coloured portion. It regulates the amount of light entering the eye by controlling the size of pupil (an aperture in eye through which light enters).

B. Cornea is the anterior portion of eye which absorbs oxygen from the air.

C. Ciliary body is a part of eye consisting of ciliary muscles that change the shape of lens.

D. Suspensory ligaments are the fibres by which eye lens is connected to ciliary body and held in its place.

So, the correct answer is 'Iris'.