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If photoreceptors in the eye are normal but the visual area of the brain is affected, why can vision still be difficult?

Answer and explanation

Correct answer: Because the brain is needed to interpret the signal

The governing concept is division of function in the visual pathway. Photoreceptors in the retina detect light and convert it into nerve impulses, but seeing requires the brain to receive, process, and interpret those impulses. If the visual area is damaged, normal retinal signals may not produce a meaningful image. Therefore option A is correct; B and C assign unrelated functions, and D is false because the eye is connected to the brain by the optic nerve.

Related tags

RetinaVisual-CortexVisionNervous SystemControl And CoordinationScienceClass 10 Mcq

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