Download Ch 37 HW - TeacherWeb

Chapter 37 Communities & Ecosystems
Due Wed. 5/9/09
1. Outline- Chapter 37 not typed, written in ink.
2. Vocabulary- on a separate sheet of paper number terms and write definitions. When
there are 2 words (vs.) be sure to distinguish differences between them. Indent on the
line below and write an example or sentence or draw a picture of the vocabulary.
1. community
2. interspecific
3. mutualism vs. parasitism
4. commensalisms vs. predation
5. ecological niche
6. resource partitioning *
7. competitive exclusion principle*
8. Batsian vs. Mueller mimicry *
9. antibiotic resistance
10. detrivore vs. decomposer
11. keystone species
12. primary vs. secondary succession
13. invasive species
14. biological control
15. chemical vs biogeochemical cycles
16. primary production
17. organic matter vs. abiotic reservoir
18. biomagnification*
19. eutrophication
20. denitrifying vs. nitrifying vs. nitrogen
fixation
* Found in lecture notes not in text
3. Review questions- number each one and answer on a separate sheet of paper. You do
not need to rewrite the questions.
1. Describe the characteristics of a community & how interspecific interactions
affect the dynamics of populations (p 742)
2. Explain 5 different aspects of ecological niche of hippos (p743 & p741)
3. Explain the types of adaptations that arose through evolution of prey species
and plants (p744)
4. Describe the trophic structure of a community (p746)
5. Explain how species diversity is measured and how keystone species effect
diversity (p748-9)
6. Describe the role of environmental disturbance on primary & secondary
ecological succession (p750)
7. Detail the effect of one invasive species on a community (p751 or766)
8. Explain how energy supply is limited by the length of food chains (p753)
9. Why is meat considered a luxury for humans? (p754)
10. How do changes in chemicals affect ecosystems and how do altered
ecosystems upset chemical cycling? (p758-9)