Unit 8 Ecology and Evolution Review

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.

Which of the following could be a density-independent limiting factor in the desert?

• number of prey

• food supply

• parasitism

• rainfall

Which point in this graph represents exponential growth?

• Point E

• Point A

• Point B

• Point C

The graph represents _____ of a population.

• logistic growth model

• exponential growth model

Which point on the graph best represents the carrying capacity?

• Letter A

• Letter C

• Letter E

• Letter D

In which month(s) did the Cottontail Rabbits reach their carrying capacity?

• January and February

• March and May

• April and January

• April and May

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.

Which of the following is density-independent limiting factor?

• disease

• competition

• earthquake

• predation

A population is __________________.

• a group of organisms of the same species, in the same place, at the same time.

• a group of organisms of the different species, in the same place, at the same time.

• an individual organism of the one species, in the same place, at the same time.

• a group of organisms of the same species, in the different place, at the same time.

What is the carrying capacity of the graph?

• around 500
• more than 500
• less than 500
• around 600