AnswersCA-Life Science B High SchoolPopulation Size and Structure

Population Size and Structure — Unit test Answers

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Humans process some foods by adding chemicals to reduce harmful bacterial growth. This allows foods to be edible for longer periods of time. Which best describes the advantages of food processing?

A
control of density-independent limiting factors such as disease spread
B
control of density-dependent limiting factors such as disease spread
C
control of density-dependent limiting factors such as predation
D
control of density-independent limiting factors such as predation
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How do limiting factors most affect population size?

A
stop population growth
B
restrict population growth
C
increase population growth
D
decrease population growth
3

How would a harsh winter most likely affect the rabbit population size?

A
population decreases
B
population increases
C
population reaches carrying capacity
D
population completely dies off
4

A population of wolves in Wyoming experienced a rapid decline. Scientists found that 20 wolves died from rabies, 15 wolves died from mange (a parasitic mite), and 10 wolves died from natural causes. Wyoming experienced a recent drought, and many populations, including deer, bison, and bear, have diminished in the past year. What is best described in this scenario?

A
Wolves reached their greatest population growth.
B
Wolves were exposed to too many limiting factors.
C
Wolves were unaffected by other populations in Wyoming.
D
Wolves’ breeding season was affected by the drought.

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