Which one of the following does not occur at puberty in girls?
Correct answer: A. Voice deepens
- A. Voice deepens
- B. Pubic hair grow
- C. Hips broaden
- D. Menstrual cycle starts
Explanation
In females, puberty is associated with the development of secondary sexual characteristics, including breast development, widening of the hips, and the onset of menstruation. These changes are primarily driven by the production of estrogen and progesterone. Puberty does not typically cause the voice to deepen to the extent seen in males. The deepening of the voice is a characteristic feature of male puberty due to the lengthening and thickening of the vocal cords, which are influenced by increased levels of testosterone.
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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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