A) Retinal is the light absorbing portion of visual photopigments
B) In retina the rods have the photopigment rhodopsin, while cones have three different photopigments
C) Retinal is a derivative of vitamin-C
D) Rhodopsin is the purplish red protein present in rods only
Correct Answer: C
Solution :
Retinal pigment epithelium shields the retina from excess incoming light. It supplies omega-3 fatty acid and glucose to the retina. The former for building photo receptive by membranes the latter for energy retinal is supplied by the visual vitamin-A cycle.
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