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Biology · PYQ NEET UG 2019(2)

हिन्दी

Artificial light, extended work-time and reduced sleep-time disrupt the activity of -

  1. Posterior pituitary gland
  2. Thymus gland
  3. Pineal gland
  4. Adrenal gland

Correct answer · Option 3

Pineal gland

Explanation

The pineal gland secretes melatonin, which regulates circadian rhythms and sleep-wake cycles; extended light and reduced sleep disrupt its activity.
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