Biology, asked by ranjananautiya9378, 11 months ago

The 24 hour (diurnal) rhythm of our body such as
the sleep-wake cycle is regulated by the hormone
(a) calcitonin (b) prolactin
(c) adrenaline (d) melatonin

Answers

Answered by xRapMonster1994x
1

Melatonin is a hormone secreted by the pineal gland in the brain. In animals, melatonin is involved in the regulation of the circadian rhythms of physiological functions including sleep timing, blood pressure regulation, seasonal reproduction, and many others. 

So, the correct answer is 'melatonin

Answered by Anonymous
0

Answer:

I think is ur correct answer is (d) melatonin.

.!

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