A) lighten the skin colours
B) control sexual behavior
C) regulates the period of puberty
D) All of the above
Correct Answer: D
Solution :
The pineal body (gland) is small mass of tissues near the centre of the mammalian brain. The pineal secretes the hormone melatonin, a modified amino acid. The pineal contains light sensitive cells or has nervous connections from the eyes and melatonin regulates function related to light. It also regulates sexual behaviour and regulating the period of puberty.
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