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Ecology
Test Description: We will be looking at Succession, Relationships between organism, and trophic levels.
Instructions: Answer all questions to get your test result.
1) Eliminating an organism from an ecosystem would have which of the following effects
A
increased carbon dioxide available to plants
B
Plants will die and go extinct.
C
food chains would be disrupted
D
help balance the ecosystem
2) Which is an example of primary succession?
A
An earthquake that breaks land.
B
A volcanic eruption that forms bare rocks as its land mass.
C
A land mass that has been plagued by fires and regrows new vegetation.
D
Forrest fire lasting more than 1 week.
3) How much energy is transferred within one trophic level of the energy pyramid.
A
100%
B
10%
C
50%
D
20%
4) Which organisms helps to reduce overpopulation in a deer herd?
A
parasites and scavengers
B
Primary consumer and parasites
C
primary consumers and predators
D
parasites and predators
5) A hook worm is a parasite that feeds off its host organism, this is an example of a ______________.
A
Mutualism
B
Producer
C
Commensalism
D
Parasitism
6) A lichen is composed of two organisms, a fungus and a cyanobacterium. The fungus provides nutrients to the cyanobacterium. The cyanobacterium provides food to the fungus. This relationship an example of ?
A
Parasitism
B
Bacteria
C
Commensalism
D
Mutualism
7) What is the best explanation of why the numbers of organisms at each trophic level decrease from the bottom of the pyramid to the top?
A
Energy is used for life processes and lost as heat at each trophic level
B
Energy is wasted at each trophic level.
C
Pyramids are small and only have producers.
D
The organisms increase in size as you move up the pyramid.
8) One organism benefits and the other neither benefits nor is harmed
A
Parasitism
B
Neutralism
C
Commensalism
D
Mutualism
9) Secondary succession begins with _______
A
soil
B
water
C
bare rock
D
air
10) A native species and a non-native species are competing for resources within the same ecosystem. The non-native species is more likely to survive than the native species in which of the following situations?
A
Native species are not from the area.
B
The non-native species has no natural enemies in the ecosystem.
C
Both the native species and the non-native species thrive on the same food source.
D
Predators prey on both native and non-native species.
*select an answer for all questions
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