Zoology-(general)

NEET Zoology (general) Assertion Reason Question

Type: Assertion Reason-assertion-Medium-Class 11

Assertion (A): The influx of Na+ ions at the site of a stimulus on a neuron leads to depolarization. | Reason (R): Depolarization occurs because the outer surface of the membrane becomes positively charged.

A

Both A and R are true and R is the correct explanation of A.

B

Both A and R are true but R is not the correct explanation of A.

C

A is true but R is false.

D

A is false.

Correct Answer

Option C

Detailed Explanation

Depolarization occurs when the outer surface of the membrane becomes negatively charged due to the influx of Na+ ions, not positively charged.

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