Question

these questions carries three marks.
write function of iris, pupil &cornea.​

Answer 1

Answer:

Cornea is the membrane covering the front of the eye that is bulged out and is responsible for the maximum refraction of the light that enters the eye. Iris forms the coloured part of the eye. It adjusts the size of the pupil, thereby controls the amount of light entering the eye.

Explanation:

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Answer 2

1) Light passes through the cornea covering the eye which refracts it. 2) The iris regulates the size of the pupil which controls how much light is allowed to enter the eye. 3) Behind the pupil is the lens that focuses light (or an image) onto the retina .