Shape of eye lens is changed by

Iris

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Ciliary muscle

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Pupil

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Optic nerve

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Solution

The correct option is B Ciliary muscle
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. Ciliary muscles constitute ciliary body which change the shape of lens.
C. Pupil is an aperture in the eye through which light rays enter the eye.
D. Optic nerve is the cranial nerve that carries visual formation from the retina to the brain.
So, the correct answer is 'Ciliary muscle'.

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Similar questions

What changes the shape of lens in the eye ?

Q. Shape of the eye lens doesn't change under any circumstances.

The change in converging power of an eye-lens is caused by the action of:

(a) iris

(b) ciliary muscles

(d) retina

(a) Draw a labelled diagram of the human eye. Label the following parts on this diagram: Cornea, Iris, Pupil, Ciliary muscles, Eye-lens, Retina, Optic nerve and Blind spot.

(b) What are the functions of the following parts of the eye?

(i) Iris (ii) Eye-lens (iii) Ciliary muscles (iv) Retina (v) Optic nerve

Q. Following is the diagram of an eye. Match the labelled parts (A - J) with their functions given below and select the correct option.

(i) Carries nerve signals to the brain
(ii) Regulates the size of the pupil to let more or less light into the eye
(iii) Changes the shape of the lens
(iv) Photoreceptors are concentrated at this point

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