1) It is the protective outer layer, barrier against dirt and filters sun's ultraviolet light.. a) Cornea b) Pupil c) Iris d) Lens 2) It is the colored part of the eye, it contract and expands together with the pupil.   a) Lens b) Iris c) Retina d) Pupil 3) Transmit and focus light into the retina. It has biconvex lens.   a) Optic nerve b) Retina c) Cornea d) Lens 4) Receive lights the lens focused, convert the light into neural signals and send them to the optic nerve.   a) Iris b) Cornea c) Retina d) Optic nerve 5) Transmit signals from the retina to the brain  a) Iris b) Optic nerve c) Cornea d) Lens

A B C EXPRESS

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