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Question
The 'pupil' in human eye can be dilated by:
The 'pupil' in human eye can be dilated by:
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Solution
The correct option is D iris
Iris is a tissue inside the eye that has a hole
in the centre called the pupil. Iris contains muscles that allow the pupil to
become larger (dilate) and smaller (constrict). The iris regulates the amount
of light that enters your eye by adjusting the size of the pupil opening.
In bright light, the iris closes and makes the
pupil opening smaller to restrict the amount of light that enters your eye. While in dim light, the iris opens or dilates and makes the pupil opening larger to
increase the amount of light that enters your eye.
Iris is a tissue inside the eye that has a hole in the centre called the pupil. Iris contains muscles that allow the pupil to become larger (dilate) and smaller (constrict). The iris regulates the amount of light that enters your eye by adjusting the size of the pupil opening.
In bright light, the iris closes and makes the pupil opening smaller to restrict the amount of light that enters your eye. While in dim light, the iris opens or dilates and makes the pupil opening larger to increase the amount of light that enters your eye.
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