Which one of the following statements is not correct?

Question

Accepted Answer

C. 1. Check option A about **retinal's role**.
Given that retinal is the component within all visual photopigments that actually absorbs light, this statement is **correct**.

2. Check option B about **rod and cone photopigments**.
Since rods contain a single pigment (rhodopsin) while cones contain three different pigments for colour vision, this statement is **correct**.

3. Check option D about **rhodopsin**.
Given that rhodopsin is indeed the purplish-red pigment found specifically in rod cells, this statement is **correct**.

4. Check option C about **retinal's origin**.
Retinal is actually derived from **vitamin A**, not vitamin C:
$$
	ext{Retinal} = 	ext{derivative of vitamin A (not vitamin C)}
$$
So this statement is **incorrect**.

Hence, the statement that is not correct is option C, so the answer is **Option C**.