Question

Parts A, B, C and D of the human eye are shown in the diagram. Select the option which gives correct identification along with its functions/characteristics:-

• A. D- Choroid - its anterior part forms ciliary body
• B. A - Retina - contains photo receptors-rods and cones
• C. B - Blind spot - has only a few rods and cones
• D. C - Aqueous chamber reflects the light which does not pass through the lens

Answer 1

Answer: (B)

Retina is the sensory layer of the eye that has rod and cone cells for vision. Rod cells help with the vision in the dim light while the cone cells help in the vision in strong light. Blindspot is the point of the eye which is devoid of rod and cone cells. The optic nerve emerges from this point which carries the optic impulse to the occipital lobe of the brain for interpretation. The aqueous chamber is filled with transparent fluid known as aqueous humor. It maintains the intraocular pressure and refractive index of the eye. The choroid is the vascular layer that absorbs the light and prevents the internal reflection of light in the eye. The anterior part of the choroid layer forms the ciliary body.