MarksRiser
MarksRiser
Zoology-Endocrine Glands

NEET Zoology Endocrine Glands Assertion Reason Question

Type: Assertion Reason-assertion-Hard-Class 11

Assertion (A): The parathyroid hormone increases blood calcium levels.

Reason (R): The thyroid gland secretes thyrocalcitonin which decreases blood calcium levels.

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 A

Detailed Explanation

The NCERT context states that thyrocalcitonin from the thyroid gland decreases blood calcium levels, while the parathyroid hormone increases blood calcium levels, making R the correct explanation for A.

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