Population Dynamics

When a population is increasing.... (SELECT ALL THAT APPLY)

• Birth rate > Death rate

• Birth rate < Death rate

• Immigration > Emigration

• Immigration < Emigration

Tags

NGSS.MS-LS2-4

The first species to populate an area after a disturbance is called:

• A pioneer species

• A pilgrim species

• A founder species

• A primary species

What causes competition to occur in an environment?

• Good conditions make resources plentiful.

• Organisms struggle for a limited resource.

• Members of a population have different roles.

• A population falls below the environment’s carrying capacity.

When individuals join a population

• Aliens

• migration

• Immigration

• Emigration

Populations of organisms are dynamic.

• True

• False

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

If the populations of grasshoppers would decrease, what affect would that have on the population of lizards?

• Increase

• Stay the same

• Decrease

• Unable to determine

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

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.

Tags

NGSS.MS-LS2-4

The graph represents _____ of a population.

• logistic growth model

• exponential growth model

Which of the following is density-independent limiting factor?

• disease

• competition

• earthquake

• predation

Tags

NGSS.MS-LS2-4

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