Question:
Choose the wrongly matched pair:
Choose the wrongly matched pair:
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Pineal gland secretes melatonin, whereas thymus secretes thymosin involved in T-lymphocyte maturation.
Updated On: Jun 12, 2026
- Hypothalamus -- Somatocrinin
- Pineal gland -- Thymosin
- Thyroid gland -- Calcitonin
- Adrenal gland -- Cortisol
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The Correct Option is B
Solution and Explanation
Concept:
Different endocrine glands secrete specific hormones that regulate body functions.
Step 1: Examine Hypothalamus -- Somatocrinin. Somatocrinin or Growth Hormone Releasing Hormone (GHRH) is secreted by the hypothalamus. This pair is correctly matched.
Step 2: Examine Pineal gland -- Thymosin. The pineal gland secretes melatonin. Thymosin is secreted by the thymus gland. Therefore this pair is wrongly matched.
Step 3: Examine Thyroid gland -- Calcitonin. Calcitonin is secreted by parafollicular cells of the thyroid gland. This pair is correctly matched.
Step 4: Examine Adrenal gland -- Cortisol. Cortisol is produced by the adrenal cortex. This pair is also correctly matched.
Step 5: Final conclusion. The wrongly matched pair is: \[ \boxed{\text{Pineal gland -- Thymosin}} \] Hence option (B) is correct.
Step 1: Examine Hypothalamus -- Somatocrinin. Somatocrinin or Growth Hormone Releasing Hormone (GHRH) is secreted by the hypothalamus. This pair is correctly matched.
Step 2: Examine Pineal gland -- Thymosin. The pineal gland secretes melatonin. Thymosin is secreted by the thymus gland. Therefore this pair is wrongly matched.
Step 3: Examine Thyroid gland -- Calcitonin. Calcitonin is secreted by parafollicular cells of the thyroid gland. This pair is correctly matched.
Step 4: Examine Adrenal gland -- Cortisol. Cortisol is produced by the adrenal cortex. This pair is also correctly matched.
Step 5: Final conclusion. The wrongly matched pair is: \[ \boxed{\text{Pineal gland -- Thymosin}} \] Hence option (B) is correct.
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