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.
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What is the correct answer to this question?
Because the brain is needed to interpret the signal
Why is this the correct answer?
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.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Control and Coordination. Topic: Nervous system.
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