alleryThe size of the pupil is controlled by the:
ARetina
BCornea
CIris
DSclera
Answer & Solution
Correct answer: C. Iris
1. The iris is the coloured muscular diaphragm behind the cornea.
2. It opens (dilates) or closes (constricts) the pupil aperture.
3. This regulates the amount of light entering the eye.
_Source: syllabus Science, Ch 10 "The Human Eye and the Colourful World", §10.1_
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