Population Dynamics

A population is 

• a group of communities that exist in different places
• a group of organisms of one species that lives in the same area at the same time
• a group of people that populate one place at the same time on different planets

Carrying Capacity is

• the capacity of what one person can carry per day 
• how many animals you have in your daily bag limit at the end of the year
• wildebeest at a watering hole with zebras
• the maximum number of individuals that the environment can support

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What are two ways in which the environment can influence population size?

• competition and natural disasters
• biomes and ecosystems

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The graph below represents the growth of a population of flies in a car? Which of the following statements best describes the graph?

• The fly population did not change.

• The fly population decreased, then increased.

• The fly population grew following the logistic growth model.

• The fly population grew following the exponential growth model.

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The graph represents _____ of a population.

• logistic growth model

• exponential growth model

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Which of the following is density-independent limiting factor?

• disease

• competition

• earthquake

• predation

Owls and snakes eat mice and other organisms. What would happen to the mice population if the owl population decreased?

• The population would decrease, as the loss of owls as part of their diet is a limiting factor.

• The population would decrease, as shelters created by owl nests is a limiting factor.

• The population would increase, as competition for food is a limiting factor.

• The population would increase, as predation by owls is a limiting factor.

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Density-independent factors are limiting factors whose effects are

• confined to the habitat of the population

• determined by the degree of competition for resources

• not influenced by population densities

• determined by the difference between birthrate and population density

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Population control factors whose effects increase as the size of the population increases are

• abiotic factors

• density-dependent factors

• limiting factors

• density-independent factors

The struggle between organisms to survive in a habitat with limited resources is called

• competition.

• predation.

• symbiosis.

• parasitism.