Download Chapter 7 Sustainability Review

Sustainability Chapter 7 Test Outline January 2016
 Study your chapter 7 key terms for multiple choice questions.
 Outline the four trophic levels in an ecosystem. Know how energy flows through each of
those four trophic levels, what determines how much energy is available for each level and the
role decomposers play in releasing energy from dead matter. (introductory assignment pages
274-277)
 Be able to interpret or construct a food web or a food chain with given organisms.
 Review notes on components of sustainable ecosystems (section 7.1). Be able to discuss
what makes an ecosystem sustainable and the differences between biotic and abiotic factors
of ecosystems.
 Review your section 7.2 assignment that covers populations and sustainability. Be able to
graph population data and discuss factors that affect population numbers. Also know the
different types of population growth and what happens when an ecosystem reaches its
carrying capacity.
 Know what an ecological footprint is and how to calculate it for an individual or a population.
 Review the section 7.3 notes on how humans are affecting sustainability. Be able to discuss
biological magnification, eutrophication, increases in greenhouse gases and how they
all affect ecosystems.
Chapter 7 Sustainability Review
1.
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3.
4.
5.
Organisms that consume dead plant and animal matter to obtain energy.
A category of organisms that is defined by how the organism gains their energy.
A group of organisms of the same species living in the same area at the same time.
Variables that affect a population that are not based on the degree of crowding.
Toxins collecting in the bodies of organisms in higher concentrations as you move up the food
chain.
6. All the interacting parts of a biological community and its environment.
7. First consuming organism in a food chain.
8. Green plants and bacteria that carry out photosynthesis to produce food.
9. Any substance that an organisms needs to sustain life.
10. The maximum number of organisms in a population that can survive on available resources.
11. The struggle among organisms to access of resources such as food or territory.
12. The interaction between two different species that live together in close association.
13. Variables that affect a population that are based on the degree of crowding in a population.
14. Accelerating growth that produces a j-shaped curve when population is graphed against time.
15. Organisms that consume both plants and animals.
16. This trophic level contains the most energy.
17. A process in which nutrient levels in an aquatic ecosystem cause an overgrowth of producers.
18. The main source of energy or fuel for ecosystems.
19. Atmospheric gases that prevent heat from leaving the atmosphere, thus increasing Earth’s
surface temp.
20. A measure of the amount of energy transferred from one trophic level to the next.
21. A process in which toxins are ingested at a greater rate than they are eliminated.
22. Poisonous chemicals that are sprayed on crops to kill pests and insects.
23. The pattern of continual use and re-use of nutrients through an ecosystem.
24. Name the three biotic characteristics of an ecosystem.
25. The non-living part (factors) of the environment.
26. The living part (factors) of the environment.
27. The warming of the Earth as a result of trapped greenhouse gases.
28. Name three greenhouse gases.
29. The measure of an individual’s or population’s impact on the environment.
30. Variety of organisms that inhabit the Earth.
31. The use of renewable resources that does not lead to long term depletion.
32. Name the 5 abiotic characteristics of an ecosystem.
33. In order for an ecosystem to remain sustainable it has to be able to do this.
*know the 6 steps in eutrophication*
Chapter 7 Sustainability Review Answers
1. Decomposers
2. Trophic level
3. Population
4. Density independent factors
5. Biomagnification
6. Ecosystem
7. Primary consumer
8. Producer
9. Nutrient
10. Carrying capacity
11. Competition
12. Symbiosis
13. Density dependent factors
14. Exponential growth
15. Omnivores
16. First trophic level
17. Eutrophication
18. Sunlight (radiant energy)
19. Greenhouse gases
20. Trophic efficiency
21. Bioaccumulation
22. Pesticides
23. Nutrient cycle
24. Symbiosis, competition, predation
25. Abiotic factors
26. Biotic factors
27. Greenhouse effect
28. Carbon dioxide and methane or water vapour
29. Ecological footprint
30. Biodiversity
31. Sustainable use
32. Water, oxygen, light, nutrients and soil
33. Cycle nutrients
34. Desert biome
Know:
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the 6 steps in eutrophication*
ecological footprint
Interrupting Food Webs Identify the producer, primary consumer, secondary
consumers in the food web.
Carrying Capacity
DDT and PCBs