Correct answer: (A) Rods and cones are uniformly distributed over the retina; (C) Rods contain photopsin
Explanation
Photoreceptor density varies strongly with retinal position, including cone-rich fovea and the photoreceptor-free optic disc, so A is false. Rod pigment is rhodopsin, whereas cone pigments are photopsins, so C is false. Rods outnumber cones overall, and cones support colour vision. Select A,C.
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