11.4 Sexual Reproduction

1.The diagram shows the female reproductive system. [Source: © International Baccalaureate Organization 2017] Which structures do K and L identify?





2. Which structure found in eukaryotes has a single membrane?





3. Which hormone is inhibited during pregnancy in order to prevent contractions of the uterus?





4. The diagram shows the exchange processes that take place in the placenta between the maternal and fetal blood. Which process requires endocytosis?





5. What does the blastocyst secrete?





6. What helps to prevent polyspermy?





7. Where does the acrosome reaction occur?





8. The image shows a section of a seminiferous tubule. What is shown by the letter X?





9. Through what process does a spermatid become a functioning spermatozoan?





10. The image shows the male reproduction system. Where is prostate cancer likely to start developing?





11. What is the function of the epididymis in the male reproduction system?





12. From where is human chorionic gonadotropin (HCG) secreted in early pregnancy?





13. The image shows the male reproduction system. Where is prostate cancer likely to start developing?





14. Which event takes place during normal fertilization?





15. What is the correct order of events in fertilization?





16. What is secreted after implantation of the blastocyst in the uterine wall?  





17. What is the role of HCG (human chorionic gonadotrophin) in early pregnancy?





18. Where is human chorionic gonadotrophin (HCG) produced?





19. What is a difference between spermatogenesis and oogenesis?





20. What is a blastocyst?





21. The micrograph shows the structure of a testis undergoing spermatogenesis. What is the structure labelled X?





22. Which is the correct sequence of stages in fertilization?







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