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What type of control is shown by the pupil becoming smaller in bright light?

Answer and explanation

Correct answer: Involuntary nervous control

Bright light acts as a stimulus detected by the eye. Circular muscles in the iris contract automatically, reducing the pupil’s diameter and limiting the amount of light entering the eye. Because this adjustment occurs without conscious choice and is coordinated through the nervous system, option A is correct. It is not voluntary hormonal control, plant hydrotropism, or insulin production in muscle.

Related tags

PupilIrisInvoluntary Nervous ControlNervous SystemControl And CoordinationScienceClass 10 Mcq

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