Populations

Demography is:

• The study of democracy.

• The study of human populations.

• The study of graphs.

• The study of ecosystems.

A density-dependent limiting factor only becomes limiting if:

• A population begins to decrease in size.

• Random events occur in nature.

• There are predator-prey interactions.

• A population reaches its carrying capacity.

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The movement of individuals into an area is known as:

• Supplementation

• Emigration

• Immigration

• Eradication

Typical population growth is described as:

• Logarithmic growth

• Logistic growth

• Linear growth

• Exponential growth

Which of the following is NOT a purpose of an age structure diagram?

• Shows percentages of a population.

• Describes why a population graph has a certain shape.

• It tells us about the number of males and females.

• Breaks down percentages of a population based on age group.

Emigration is:

• When a population continues to increase.

• When individuals move into an area.

• When individuals move out of an area.

• The study of human popuations.

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Which of the following would cause a population to increase in size?

• Emigration

• Decreased Birthrate

• Immigration

• Increased Deathrate

In a given area, if the population of predators increases, the population of prey will _____________.

• increase

• decrease

• remain about the same

• go extinct

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Which factor would contribute to an exponential growth rate in a given population?

• higher death rates

• less competition

• less resources

• lower birth rates

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All of the following are density-independent factors except:

• seasonal changes

• hurricanes

• less space

• deforestation

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