Puberty marks the beginning of sexual maturation in human beings. Describe two physical changes that occur specifically in boys and two that occur specifically in girls during puberty. Why is this stage considered important for reproduction?
Generated by claude-sonnet-4-6 · 2026-06-26 01:02 · grounding rag
Model Answer
Physical changes in boys during puberty:
- New thick hair growth appears on the face (moustache and beard).
- The penis occasionally becomes enlarged and erect; voice begins to crack.
Physical changes in girls during puberty:
- Breast size begins to increase, with darkening of the skin of the nipples.
- Girls begin to menstruate (onset of menstrual cycle).
Importance of puberty for reproduction:
Puberty is important because reproductive tissues mature during this stage, enabling the body to produce germ-cells (sperms in males, eggs in females). As general body growth slows, the body directs resources toward sexual maturation. Changes like erection of the penis (needed for transfer of sperms) and development of breasts and uterus (needed for carrying and feeding the baby) prepare the body for the complete reproductive process.
Source: Chapter 7, Section 7.3.3
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Explanation
- The question asks for two specific to boys and two specific to girls — examiners will deduct marks if you list common changes (hair in armpits, pimples) here.
- The "why important" part needs to connect puberty → maturation of reproductive tissues → ability to produce germ-cells and carry out reproduction. Don't just say "the body matures."
- With 5 marks, budget roughly: 1 mark each for the four changes + 1 mark for the explanation of importance.
- Avoid listing voice cracking AND facial hair as two separate boy-specific points if pressed for space; combine them or pick the two strongest examples.