Chapter 53: Population Ecology

A herd of zebras would be considered a

• community
• species
• ecosystem
• population

All of the following are density-dependent factors that limit animal populations EXCEPT.

• weather
• predation
• food competition
• birthrate

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Which point on the graph represents carrying capacity?

• A
• B
• C
• D

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Which of the following represents the combination of all relevant environmental variables in which a species or population lives?

• clade
• hybrid zone
• phylogeny
• ecological niche

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Which of the following encompases all the others?

• ecosystem
• community
• population
• individual

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Refer to the diagram of the survivorship curve.
Which curve best describes an organism that invests a lot of energy in parenting?

• A
• B
• C
• this is not a survivorship curve

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A species described as r-strategist would definitely NOT have which of the following characteristics?

• clumped population pattern
• much parenting
• many offspring
• random population pattern

Which letter shows the the exponential growth of a population?

• A
• B
• C
• D

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The maximum population size for a species based on the environmental factors is called

• ecological footprint
• carrying capacity 
• population growth
• environmental capacity

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There are 200 bears in an area.  10 emigrate, 15 immigrate, 10 are born and 20 die.  How many are left?

• 195
• 205
• 200
• 260

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