Download Read Chapter 1 in the textbook (pages 4 – 21)

Name: ________________________________________
Block: _____
Date: _____/_____/_____
ENVIRONMENTAL SCIENCE
Respond to all of the following problems in preparation for your Chapter 8 Test.
Chapter 8 Study Guide: Understanding Populations
1) What term generally describes an organism’s way of life? _______________
2) What term describes the arrangement of a population within a given area? ____________________
3) What term describes a group of individuals of the same species, living in a given area? __________________
4) What 2 terms describe a species interaction where one organism feeds on the other? ____________________
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5) What does a population’s birth rate minus its death rate equal? _____________________________________
6) What term describes a species interaction where organisms attempt to use the same resources?
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7) What term describes a species interaction where one organism benefits and the other is unaffected?
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8) What term describes the maximum population that an ecosystem can support indefinitely? _______________
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9) What term describes a way to reduce competition between species? _________________________________
10) What term describes a factor that determines the carrying capacity of an ecosystem? ____________________
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11) Compare the reproductive potential of humans to that of bacteria. ___________________________________
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12) Give an example of a population. ____________________________________________________________
13) What is population density? _________________________________________________________________
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14) Is a cow feeding on grass in a pasture an example of predation or parasitism? Explain your answer.
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15) Describe the relationship roles of a Canadian lynx and a snow-shoe hair. _____________________________
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16) In which 2 types of species interactions is neither organism harmed? ________________________________
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Name: ________________________________________
Block: _____
Date: _____/_____/_____
ENVIRONMENTAL SCIENCE
17) Give an example of a species with random population dispersion? __________________________________
18) What is the difference between density-dependent deaths and density-independent deaths? Provide an
example of each. _________________________________________________________________________
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19) Some deer have evolved thick fur to help them survive colder climates. Explain why the thick fur is an
example of an adaptation and not of coevolution. ________________________________________________
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20) A certain species of plants shows exponential growth after being introduced in a new area. What would
happen to this plant’s population after a few years? ______________________________________________
21) Consider the relationship between a rabbits and coyotes in a common area.
a. If the rabbit population suddenly experienced exponential growth, what would happen to the
coyote population? Why? _________________________________________________________
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b. If the rabbit population exceeds the carrying capacity, what will happen to the coyote population?
Why? _________________________________________________________________________
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22) List and briefly describe the 5 types of species interactions. Provide an example for each and describe the
roles of the organisms involved.
a. _______________________________________________________________________________
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Example: _________________________________________________________________________
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b. _______________________________________________________________________________
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Example: _________________________________________________________________________
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Name: ________________________________________
Block: _____
Date: _____/_____/_____
ENVIRONMENTAL SCIENCE
c. _______________________________________________________________________________
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Example: _________________________________________________________________________
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d. _______________________________________________________________________________
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Example: _________________________________________________________________________
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e. _______________________________________________________________________________
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Example: _________________________________________________________________________
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