When puberty is achieved in girls, which one of the following occurs in them but not in boys?
Correct answer: C. Menarche
- A. Excessive growth of hairs on skin
- B. Pubic hair growth
- C. Menarche
- D. Heaviness of voice
Explanation
Menarche is the first occurrence of menstruation as soon as puberty is achieved, and it does not occur in males.
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Human reproduction covers the male and female reproductive organs, gamete formation, fertilization, implantation and hormonal regulation. The menstrual cycle includes ovarian and uterine changes controlled by pituitary and ovarian hormones, while sexually transmitted diseases are studied through their causes, transmission, symptoms, prevention and effects on fertility.
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