Question

The photopigment visual purple is present in

• A. Rods
• B. Cones
• C. Choroid
• D. Iris

Hint:

Photoreceptor pigments: \[ \boxed{ \begin{aligned} &\text{Rods} &&\rightarrow \text{Rhodopsin (Visual purple)} &\text{Cones} &&\rightarrow \text{Iodopsin (Photopsin)} \end{aligned} } \]

Answer 1

The Correct Option is A

Step 1: Recall the photopigments present in the retina. The photopigment visual purple is \[ \boxed{\text{Rhodopsin}} \] which is present in the rod cells of the retina.

Step 2: Eliminate the remaining options. \[ \begin{aligned} \text{Cones} &\rightarrow \text{Contain iodopsin (photopsin)} \text{Choroid} &\rightarrow \text{Vascular pigmented layer of the eye} \text{Iris} &\rightarrow \text{Controls the size of the pupil} \end{aligned} \]

Step 3: Choose the correct option. Hence, \[ \boxed{(A)} \] is the correct answer.