Question

Match the following in most appropriate way:
$\begin{array}{cc}\text{Part of eye}& \text{Function}\\ a)\text{Iris}& p)\text{Converts the light}\\ & \text{into neural signals,}\\ & \text{and send these}\\ & \text{signals on to the brain}\\ & \text{for visual recognition}.\\ b)\text{Pupil}& q)\text{Primarily focuses}\\ & \text{and controls the}\\ & \text{entrance of light}\\ & \text{into the eye.}\\ c)\text{Retina}& r)\text{Controls size of}\\ & \text{pupil and amount}\\ & \text{of light reaching}\\ & \text{the retina.}\\ d)\text{Cornea}& s)\text{Focuses light onto}\\ & \text{the retina and help}\\ & \text{the eye to focus on}\\ & \text{objects at different}\\ & \text{distances.}\end{array}$

• A. a-s, b-r, c-t, d-p, e-q
• B. a-r, b-s, c-p, d-t, e-q
• C. a-r, b-s, c-t, d-q, e-p
• D. a-s, b-r, c-p, d-t, e-q

Answer 1

The correct option is A

a-s, b-r, c-t, d-p, e-q

Following are the functions of different eye parts.
Functions of iris and pupil: The iris is the part of the eye that is coloured and it is responsible for controlling the amount of light reaching the retina by regulating the size of the pupil. The size of the pupil can fluctuate as the iris has tiny muscles that can either widen or narrow, depending upon surrounding light. At night, for example, the muscles will widen the pupil so there is sufficient light in the eye. When it is too bright outside, the pupil will contract to allow less light into the eyes and prevent damaging the retina.
Convex lens: As we all know it's a converging lens, It focuses light onto the retina and helps the eye to focus on objects at different distances. It changes its shape to focus light by using the ciliary body, which is muscles.
Retina: It converts the light into neural signals, and send these signals on to the brain for visual recognition. The retina is found on the inner part of the eye and is where images get transmitted to our brains. It is made up of multiple layers including rods and cones.
Cornea: The cornea is the outer covering of the eye and is dome shaped. Primarily focusing of light and controlling amount of light into an eye is done by the cornea.