Name_____________________________ bio 44, final exam May 11, 2006Each question is worth 6 points. 1. What is a climax plant community, and how would you identify a community as climax?2. What are the bad effects of forest fire prevention in the west?3. If you were looking for non-native ornamental plants to grow wild in southern California, here in the world would you look for them and why?4. What are the characteristics of an oligotrophic lake?5. What is the >usual= length of a terrestrial food chain and why?6. What are the characteristics that make a species a Akeystone@ species?7. How do pioneer and climax plant communities differ? 8. Describe the policy that governs the management of the U.S. National Forests?9. Give a "proximate" causal explanation for how "mother love" works?0.. Give an "ultimate" causal explanation for why "mother love" exists.1. What is meant by the term fixed action pattern@ and why is it fixed.@12. What is meant by the term Adisplacement@ activity, and what causes it to occur?13. Females often pick the most colorful male to mate with. How does this insure that sheis picking the best male.?14. What types of habitats (biomes) are least protected in the United States, and why?15. What keeps animals from lying successfully?16. Under what conditions will an animal sacrifice its life to save others?17 A male animal fights another male of the same species and dies in the fight. Under what conditions could this be selected for? 18-19Give three reasons why the endangered species act has failed to prevent U.S. species from going extinct.20 What is meant by the term "umbrella" species and how are they used?21. What is an atmospheric inversion and why are they important to us?22. Adolescents of many species, including humans, put themselves at risk for the good of their group.(go to Iraq) . Give a rationale for how this behavior might be under genetic control23 Give a rationale for how this behavior might occur without genetic control.24. Why are so few species social? What situations might lead to social organization? (why was it selected for?)25. What is the difference between a plant spore and plant pollen?26. what is phloem and what does it do?27. What rules determine the "ownership" or legal control of wildlife in the U.S.?28 Where and how is ozone valuable to life?9 Where and how is ozone harmful to life? 0. What is the cause of ‘biological magnification’ in food chains?31. What happens to a community when you cause the extinction of most of its members?32. What is the ‘no surprises’ clause in Multiple Species Habitat Plans?33. Would the discovery of organic molecules on Mars indicate there had once been life there? why or why