alleryThe hormone that triggers the changes of puberty in human females is mainly:
ATestosterone
BOestrogen
CInsulin
DAdrenaline
Answer & Solution
Correct answer: B. Oestrogen
1. Female puberty changes (breast development, menstruation, body hair) are driven by oestrogen.
2. Oestrogen is secreted by the ovaries.
3. Testosterone is the male equivalent; insulin and adrenaline are unrelated to reproductive maturation.
_Source: syllabus Science, Ch 7 "How do Organisms Reproduce", §7.3.3_
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