Question

Melatonin is secreted by

A.the hypothalamus during the day
B.the pineal gland during the night
C.the autonomic nervous system during the winter
D.the thyroid gland during cold seasons

Answer 1

The answer would be B, the pineal gland during the night.

Step-by-step explanation:

The secretion of melatonin is triggered by darkness, therefore produced during the night.

Answer 2

B. the pineal gland during the night

Step-by-step explanation: