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Which of these is not a function of melatonin?(a) Regulation of the diurnal cycle(b) Regulation of body temperature(c) Regulation of menstrual cycle(d) Regulation of bowel movementsI had been asked this question during an interview.This intriguing question comes from Chemical Control and Coordination topic in chapter Chemical Control and Coordination of Biology – Class 11

Preffered Answer: CORRECT choice is (d) Regulation of BOWEL movements

The best explanation: MELATONIN is secreted by the pineal GLAND. It is RESPONSIBLE for the regulation of the sleep-wake or diurnal cycle, body temperature as well as menstrual cycle, but not bowel movements.

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