Animal Population

Scientists have been studying the size of three populations in a grassland. In this ecosystem, lizards eat fireflies, and fireflies eat gnats (a type of insect). The data showed that all three populations were stable. Then the lizard population decreased suddenly. What will most likely happen to the size of the firefly population as a result? The firefly population will . . .

• increase

• stay the same

• decrease

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Scientists have been studying the size of three populations in a region. In this ecosystem, lions eat wild pigs, and wild pigs eat frogs. The data showed that all three populations were stable. Then the frog population decreased suddenly. What will likely happen to the size of the wild pig population as a result? The size of the wild pig population will . . .

• increase

• stay the same

• decrease

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Scientists have been studying the size of three populations in a swampland. In this ecosystem, herons (a type of bird) eat frogs, and frogs eat dragonflies. The data showed that all three populations were stable. Then the dragonfly population increased suddenly. What will likely happen to the frog population as a result? The size of the frog population will . . .

• increase

• stay the same

• decrease

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Scientists have been studying the size of three populations in Peru. In this ecosystem, pumas (large wild cats) eat deer, and deer eat grass. The data showed that all three populations were stable. Then the puma population increased suddenly. What will most likely happen to the size of the deer population as a result? The size of the deer population will . . .

• increase

• stay the same

• decrease

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Carrying capacity is...

• The maximum number of individuals that can fit into an area

• Ability of an area to accommodate a growing population

• The greatest # of individuals an area can support over time.

• The maximum number of species that can co-exist in an area

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Carrying capacity is...

• The maximum number of individuals that can fit into an area

• Ability of an area to accommodate a growing population

• The greatest # of individuals an area can support over time.

• The maximum number of species that can co-exist in an area

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which factor is a density-dependent limiting factor on the population of a species?

• seasonal variation

• natural disasters

• unusual weather

• predation

Tags

NGSS.MS-LS2-4

A population is

• a group of similar species in different areas

• a group of the same species in the same geographic area.

• a group of several species in the same geographic area

• a group of several species along with their abiotic factors in a small area.

A good way to estimate the population size.

• mark-recapture

• count everyone of them

• satellites

• cameras

Individuals gather in patches, influenced by resource availability and behavior.

• clumped dispersion

• random dispersion

• uniform dispersion

• isolated dispersion

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2