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Ecology Review
Test Description: Ecology Review
Instructions: Answer all questions to get your test result.
1) Which of the following is mutualism?
A
One benefits, one does not care.
B
One benefits, one is harmed.
C
Both species are harmed
D
Both species benefit
2) Which of the following is commensalism?
A
Both species benefit
B
Both species are harmed
C
One benefits, one is harmed.
D
One benefits, one does not care.
3) Why are producers always found at the bottom of a food chain?
A
Producers are silly and can't avoid predators.
B
Producers are the only organisms that can use the sunlight directly.
C
Producers are more numerous than consumers.
D
Producers are larger than consumers.
4) What is an example of an autotroph?
A
Plants
B
Bears
C
People
D
Bacteria
5) What process absorbs carbon?
A
Respiration
B
Photosynthesis
C
Burning fossil fuels
D
Deforestation
6) Logistic growth is shaped like a
A
L
B
M
C
S
D
J
7) Exponential growth is shaped like a
A
M
B
S
C
J
D
L
8) Which gas is most associated with the greenhouse effect?
A
Oxygen
B
Nitrogen
C
Carbon dioxide
D
Water
9) What organism absorbs nitrogen from the atmosphere?
A
Bacteria
B
Fungus
C
Animals
D
Plants
10) How much energy is LOST as you go up an energy pyramid?
A
1%
B
100%
C
90%
D
10%
11) What gas is most associated with ozone depletion?
A
Carbon dioxide
B
Sulfur
C
Chloroflourocarbons
D
Nitrogen
12) Density-independent factors are limiting factors whose effects are _____.
A
confined to the habitat of the population
B
determined by the degree of competition for resources
C
not influenced by population size
D
determined by the difference of birthrate and death rate
13) What best describes how photosynthesis and respiration move carbon throughout the atmosphere?
A
Destroying carbon
B
Recycling carbon
C
Producing carbon
D
Absorbing carbon
14) You notice a food chain in your community. Grass is eaten by rabbits, which is eaten by snakes, which is eaten by hawks. If the grass contained poison, which organism would have the MOST poison?
A
Snake
B
Hawk
C
Rabbit
D
Grass
15) As you go up an energy pyramid, approximately 90% of the available energy is lost. What most likely accounts for this loss of energy?
A
Released as heat
B
Used to produce new compounds
C
Reproduction
D
Absorbed at previous energy levels.
16) What would best explain why fish populations are drastically declining in lake ecosystems?
A
air pollution created by factories
B
beautification of the lake
C
putting several different species of fish into the lake
D
increasing the size of the lake
*select an answer for all questions
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