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Ecology Part 2
Test Description: Same as part 1
Instructions: Answer all questions to get your test result.
1) The most common decomposers in an ecosystem are ____.
A
bacteria and fungi
B
algae and worms
C
birds and trees
D
grass and deer
2) What is a trophic level in an energy pyramid?
A
who the organism competes with
B
the feeding level of an organism
C
the area that an organism lives
D
the resources and organism needs
3) Which statement is true about energy pyramids?
A
There is more energy available at the primary consumer level than at the producer level.
B
There is more energy available at the secondary consumer level than at the producer level.
C
There is more energy available at the producer level than the primary consumer level.
D
There is more energy available at the tertiary consumer level than at the secondary consumer level.
4) There is only ___ of energy available from one level up to the next in an energy pyramid.
A
90%
B
10%
C
50%
D
20%
5) Water changing from a liquid to a gas (water vapor) is called ____.
A
runoff
B
precipitation
C
condesation
D
evaporation
6) Water evaporating off of plants is called ____.
A
transpiration
B
runoff
C
precipitation
D
condensation
7) All of the following add carbon dioxide to the atmosphere except ___.
A
photosynthesis
B
respriation
C
deforestation
D
burning fossil fuels
8) During respiration ____ is taken out of the atmosphere and ___ is released to the atmosphere.
A
oxygen, carbon dioxide
B
carbon dioxide, oxygen
C
oxygen, nitrogen
D
nitrogen, carbon dioxide
9) What fixes nitrogen gas in the atmosphere into nitrogen compounds that can be taken in by plants and animals?
A
bacteria and fungi
B
bacteria and lightning
C
plants and lightning
D
fungi and plants
10) How do animals get nitrogen?
A
eat plants and animals
B
breath it in through lungs
C
animals don't need nitrogen
D
absorb it through the skin
11) Plants and animals use nitrogen to ___.
A
make proteins and nucleic acids (for DNA)
B
make carbohydrates
C
transport water
D
make sugar
12) The interaction of many food chains is a(n)
A
ecological balance
B
trophic level
C
food web
D
abiotic factor
13) Animals that eat both plants and animals are ____.
A
carnivores
B
decomposers
C
herbivores
D
omnivores
14) In what way do the organisms of the upper trophic levels have less energy than the organisms of the lower trophic levels?
A
Their food has less concentrated energy
B
Their food has less energy
C
Their bodies have less energy
D
They have less energy available to them
15) The bottom of an energy pyramid is made up of which kind of organisms?
A
herterotrophs
B
primary consumers
C
autotrophs
D
secondary consumers
16) How is carbon stored in the earth?
A
in the living tissues of organisms and in the atmosphere
B
in rock strata where it is released by weathering in the form of nitrogen
C
When a living thing dies its body becomes buried and compressed over time becoming a fossil fuel
D
in the oceans
17) How does predation help prey populations?
A
Predation encourages mutualistic relationships to develp.
B
Predation does not help prey populations and is a form of parasitism.
C
Predation artificially limits populations and only prevents overcrowding.
D
Predation naturally limits populations by preventing overcrowding and starvation.
18) All the populations living in an area are called a ____.
A
ecosystem
B
organism
C
community
D
biosphere
*select an answer for all questions
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