Understanding Growth & Development Check Point Questions Name:______________________________________________________________ Period:_____ 1. Which body system ensures the survival of the species?_______________ ______________________________________________________________ 14. Describe a tetrad.____________________________________________ ______________________________________________________________ 2. How do single-celled EUKARYOTES reproduce? _____________________ 15. Define crossing over as it applies to chromosomes._________________ ______________________________________________________________ ______________________________________________________________ 3. What is the main disadvantage of asexual reproduction?______________ ______________________________________________________________ 4. What is the main advantage of sexual reproduction?_________________ ______________________________________________________________ 16. What is the foundation of evolution by natural selection? ___________ ______________________________________________________________ 5. Define diploid. _______________________________________________ ______________________________________________________________ 17. What body system influences the reproductive system? What does it use to do this?__________________________________________________ ______________________________________________________________ 6. What type of cell is diploid?_____________________________________ 18. What specific part of the brain starts puberty?_____________________ 7. Define haploid._______________________________________________ ______________________________________________________________ 19. Define spermatogenesis. How many sperm are made?______________ ______________________________________________________________ ______________________________________________________________ 8. What type of cell is haploid?____________________________________ 9. Give three other names for gametes:_____________________________ ______________________________________________________________ 10. What process forms gametes?__________________________________ 11. What most important thing happens in Meiosis I?__________________ ______________________________________________________________ 12. What most important thing happens in Meiosis II?__________________ ______________________________________________________________ 13. Define homologous as it applies to chromosomes.__________________ ______________________________________________________________ 20. Define oogenesis. How many eggs are made?______________________ ______________________________________________________________ ______________________________________________________________ 21. In terms of when and how many total gametes are produced, what is the difference between males and females?__________________________ ______________________________________________________________ ______________________________________________________________ 22. What three structures form specifically to support the developing fetus?_________________________________________________________ ______________________________________________________________