Question

Assertion (A): Choroid layer provides nourishment to the eye and also prevents light rays form reflecting and scattering inside the eye.

Reason (R): Choroid layer is the outermost layer of the eyeball which surrounds the sclerotic layer. This layer contains two types of pigments - Rhodopsin and Iodopsin.

1. A is True and R is False.
2. A is False and R is True.
3. Both A and R are True.
4. Both A and R are False.

विकल्प

• (1)

• (2)

• (3)

• (4)

Answer 1

(1) 

Explanation:

The choroid layer contains many blood vessels that provide nourishment to the eye. Its dark pigment also prevents internal reflection and scattering of light inside the eyeball. Therefore, the Assertion (A) is true.

The choroid is not the outermost layer; it is the middle layer of the eyeball and lies between the sclera and retina. Also, rhodopsin and iodopsin are visual pigments of the retina, not pigments of the choroid. Therefore, the Reason (R) is false.

Hence, A is true and R is false.