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Reported Question / Answer
Q.) Exposure to darkness leads to increased melatonin secretion. It is brought about by -
1)
Increasing the serotonin N-acetyl transferase
2)
Decreasing the activity of suprachiasmatic nuclei
3)
Blocking the release of norepinephrine from sympathetic nerve terminals
4)
Decreasing the hydroxy-indole-o-methyl transferase activity
5)
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Answer :
1
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