Puberty usually begins between the ages of:
Correct answer: B. 9 and 15
- A. 5 and 8
- B. 9 and 15
- C. 16 and 19
- D. 20 and 25
Explanation
9 to 15 is the most common range for the onset of puberty. Girls usually start puberty between ages 8 and 13, while boys typically begin between ages 9 and 14. However, these ages can vary widely among individuals.
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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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