Term
| A species upon which the entire ecosystem depends on is called a(n): |
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Definition
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Term
| A set of interacting species that live in the same area is called a(n): |
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Definition
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Term
| The simplest environmental unit that can support life is called a(n): |
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Definition
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Term
| An ecological community is: |
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Definition
| a set of interacting species that occur in the same place |
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Term
| “Community-level interactions” refer to: |
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Definition
| the fact that changes in one species in an ecological community affect others, even species they don’t interact with directly |
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Term
17. All of the following are able to produce food by direct interaction with sunlight except:
a) trees
b) kelp
c) green algae
d) fungi
e) corals |
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Definition
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Term
19. The presence of sea otters within a kelp forest community results in
a) an increase in species diversity
b) a decrease in species diversity
c) no change in species diversity |
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Definition
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Term
20. The development from early to middle stages of succession results in
a) an increase in species diversity
b) a decrease in species diversity
c) no change in species diversity |
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Definition
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Term
21. Intensive farming results in
a) an increase in species diversity
b) a decrease in species diversity
c) no change in species diversity |
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Definition
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Term
22. Occasional (at least once every 50 years), light fires in jack pine forests in Michigan result in
a) an increase in species diversity
b) a decrease in species diversity
c) no change in species diversity |
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Definition
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Term
24. Moderate grazing in a pasture in comparison to no grazing results in
a) an increase in species diversity
b) a decrease in species diversity
c) no change in species diversity |
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Definition
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Term
31. All of the following are fundamental elements of an ecosystem and must be present for sustained life except:
a) a flow of energy
b) at least one species that produces food from inorganic compounds
c) at least one species that feeds upon the others in the ecosystem
d) at least one species that decomposes the wastes of the others in the ecosystem
e) a cycling of chemical nutrients |
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Definition
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Term
32. Green plants, algae and certain bacteria produce sugar through the process of photosynthesis. To which trophic level do they belong to?
a) first trophic level
b) second trophic level
c) third trophic level
d) fourth trophic level
e) first and second trophic level |
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Definition
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Term
| 33. According to the Environmental Science text, an ecosystem: |
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Definition
| is the smallest system that includes and sustains life |
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Term
34. The simplest ecosystem needs _________ to function properly.
a) one species that produces its own food, also decomposes it, plus water and air
b) air and water
c) one species that produces its own food, and a second that decomposes the waste of the first one, plus water and air
d) nutrients and water
e) there is no simple ecosystem |
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Definition
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Term
36. In the “holistic view” of ecological communities:
a) all individuals are replaceable
b) all individuals are keystone species
c) all species can easily be substituted by others
d) species association vary from site to site
e) species association change in time |
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Definition
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Term
38. According to the Environmental Science text, the host springs in Yellowstone National Park is an
a) ecosystem
b) ecological community
c) neither |
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Definition
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Term
40. Boston, Massachusetts is
a) ecosystem
b) ecological community
c) neither |
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Definition
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Term
39. A sewage treatment plant is an
a) ecosystem
b) ecological community
c) neither |
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Definition
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Term
41. A 5000 hectare farm in North Dakota is an
a) ecosystem
b) ecological community
c) neither |
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Definition
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