IGCSE Biology: Reproduction in Humans – Exam Tips & Revision Guide
This guide covers IGCSE Biology topic 16 (part 2): reproduction in humans. You will revise the male and female reproductive systems, fertilisation (sperm and egg), pregnancy (placenta, umbilical cord), and the menstrual cycle (ovulation, menstruation).
Key concepts to revise
- Male – Testes (sperm, testosterone); sperm duct; urethra; penis. Sperm: head (nucleus), tail (movement).
- Female – Ovaries (eggs, oestrogen); oviduct (fertilisation); uterus (implantation, pregnancy); vagina.
- Fertilisation – Sperm meets egg in oviduct; nuclei fuse; zygote forms; divides; implants in uterus.
- Placenta – Exchange of nutrients, oxygen, waste between mother and fetus; umbilical cord; no direct mixing of blood.
Exam tips and command words
- Label – Male and female reproductive systems; state function of testes, ovaries, oviduct, uterus.
- Describe – The path of sperm (testes to sperm duct to urethra); the path of egg (ovary to oviduct to uterus); fertilisation in oviduct.
- State – Where fertilisation occurs (oviduct); where the embryo develops (uterus).
- Explain – The role of the placenta (exchange of substances; barrier to some pathogens).
Common mistakes
- Saying fertilisation occurs in the uterus (it occurs in the oviduct).
- Confusing placenta (exchange organ) with umbilical cord (connects fetus to placenta).
- Not stating that the placenta allows exchange of substances but mother’s and baby’s blood do not mix.
Revision checklist
- Label male and female reproductive systems and state the function of main organs.
- Describe fertilisation (where, what fuses) and early development (zygote to embryo to implantation).
- State the role of the placenta and umbilical cord.
- Describe the menstrual cycle (ovulation, menstruation; link to hormones if on syllabus).
Next steps
Book a free trial with an IGCSE Biology tutor to practise human reproduction questions, or explore Tutopiya’s learning portal for more revision resources.
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