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How Ecosystem Work
Test Description: Quiz Review
Instructions: Answer all questions to get your test result.
1) Gas makes up our atmosphere but can be used by plants only when transformed by bacteria first
A
hydrogen
B
carbon dioxide
C
oxygen
D
nitrogen
2) Describe the relationship between photosynthesis and cellular respiration
A
they both include the product oxygen
B
they are inversely proportional
C
they both include sunlight as an engry
D
they are each performed by producers
3) Nitrogen-fixing bacteria convert atmospheric nitrogen into
A
nitrous oxide
B
ammonia
C
phosphate
D
glucose
4) The highest organism on the food chain
A
decomposer
B
ominvore
C
herbivores
D
carnivore
5) If an insect eats a plant and a bird eats the insect, about how much energy from the plant is stored in the insect for the bird to use?
A
100%
B
1%
C
.1%
D
10 %
6) Growth of plants after a forest fire is an example of
A
Primary Succession
B
Secondary Succession
C
Old-Field succession
D
Pioneer Species
7) Most of the Earth's carbon is secured in
A
glucose
B
ammonia
C
limestone
D
fossil fuels
8) Excessive algae growth in freshwater ecosystems is a direct result of
A
nitrogen cycle
B
fertilizer overusage
C
global warming
D
acid precipitation
9) Which organisms are most likely to arise in areas experiencing primary succession?
A
gymnosperms
B
angiosperms
C
lichens
D
mosses
10) The process of breaking down food to yield energy is called
A
photosynthesis
B
chemosynthesis
C
cellular reproduction
D
cellular respiration
*select an answer for all questions
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