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Chapter 15
Test Description: Study guide for chapter 15 test.
Instructions: Answer all questions to get your test result.
1) The population ............ is the number of invdividuals in a population.
A
size
B
density
C
habitat
D
niche
2) ............... is a form of symbiosis that benefits one species and harms the other.
A
mutalism
B
parasitism
C
commensalism
D
organisms
3) A ............ is a simple way of showing how energy, in the form of food, passes from one organism to another.
A
carrying capacity
B
food web
C
food chain
D
water
4) Changing nitrogen gas to nitrogen in the soil is called ..............
A
energy
B
biotic
C
nitrogen fixation
D
competition
5) The role or job of an organism in the ecosystems is a .............
A
biosphere
B
habitat
C
niche
D
biome
6) ............ is a very important abiotic factor and is the main compound in cell fluids.
A
soil
B
light
C
air
D
water
7) ........... factors are the non-living factors in an enviroment.
A
symbiosis
B
energy
C
abiotic
D
biotic
8) ........... is the study of interactions among organisms and their environment.
A
populations
B
ecology
C
communities
D
ecosystems
9) .......... is need for recyling matter.
A
decomposers
B
populations
C
energy
D
water
10) A .......... limits the number number of organisms in an environment.
A
limiting factor
B
carrying capacity
C
food chain
D
spacing
*select an answer for all questions
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