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Melatonin, which helps regulate the daily rhythm of the body, is secreted by the
Apituitary gland
Badrenal gland
Cpineal gland
Dthymus
Answer & Solution
Correct answer: C. pineal gland
1. The pineal gland is located on the dorsal side of the forebrain.
2. It secretes melatonin.
3. Melatonin plays a very important role in the regulation of the daily rhythm of the body.
4. The pituitary sits beneath the brain and releases a different set of hormones.
5. Confusing pineal with pituitary is common because both are small midline structures.
_Source: NCERT Class 11 Biology Ch19 'Chemical Coordination and Integration', section 19.2.3_
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