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

Answer 1

The correct option is A A-Retina-contains photo receptors-rods and cones

Retina is the innermost, light sensitive layer of the eyeball, on which images are formed. They contain Photoreceptors which are light-sensitive cells.
Blind spot ​​​​​​​is the point in the Retina where the optic nerve exits the eye. There are no photoreceptors which makes this Blind Spot insensitive to light.
Aqueous chamber contains a clear, watery fluid (produced by the Ciliary body) that fills the area between the Lens and the Cornea called aqueous humour. It supplies nutrients that nourishes the Cornea and Lens and maintains the convex shape of the Cornea along with refracting light onto the pupil.
Choroid is ​​​​​​​a black-pigmented layer under the Sclera that prevents the internal reflection of light rays. Filled with blood capillaries, It is rich in blood vessels that bring oxygen and nutrients to nourish the eyeball. The Choroid is modified to form the Iris and the Ciliary Body at the front of the eye.