Population Ecology Pre Test Review

Which of the following is a density-dependent biotic factor that could influence a population of deer?

• a flood that washes away much of the deer's food supply

• a disease that spreads more rapidly as the deer population increases

• pollution that contaminates the water sources used by deer

• extreme cold that reduces the number of deer in the area

Tags

NGSS.MS-LS2-4

Which type of population growth occurs when a population reaches its carrying capacity?

• exponential growth

• unrestricted growth

• logistic growth

• linear growth

Which of the following is an example of a density-independent factor that could impact a population of rabbits in a grassland ecosystem?

• A severe drought reduces water availability throughout the grassland.

• An increase in rabbit population leads to food shortages.

• A contagious disease spreads rapidly among the rabbits.

• A new predator species moves into the grassland and begins hunting rabbits.

Which of the following is a biotic factor that could influence the growth of algae in a pond ecosystem?

• amount of sunlight received

• temperature of the water

• presence of herbivorous insects

• pH level of the pond

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-2

NGSS.MS-LS1-5

In a forest ecosystem, both foxes and owls prey on mice. If the number of owls suddenly decreases, what will be the most immediate effect on the populations of the other animals?

• The mouse population will increase.

• The fox population will decrease.

• The mouse population will decrease.

• The fox population will increase.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

In a forest ecosystem, the deer population has exceeded the carrying capacity, and food resources are becoming scarce while the number of predators is rising. What is the most likely outcome for the deer population after some time?

• The deer population will stay the same.

• The deer population will decrease due to increased predation.

• The deer population will increase because of limited food resources.

• The deer population will increase due to more predators.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-2

NGSS.MS-LS2-1

Examine the food web diagram. If disease rapidly kills off the rabbit population, what will most likely happen to the fox population?

• The fox population will increase because it will begin eating frogs

• The fox population will decrease because it will have to compete with other predators for mice

• The fox population will increase because there will be an increase in the mouse population

• The fox population will decrease because it will also catch the disease

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

NGSS.MS-LS2-3

If moss is considered an early pioneer in a forest ecosystem, which of the following would most likely be a dominant species in the climax community?

• algae

• oak

• fern

• dandelion

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-3

After a flood impacts a forest ecosystem, what is most likely to happen to the ecosystem over time?

• The ecosystem will only recover if humans intervene.

• The ecosystem will transform into a completely different type of ecosystem.

• The ecosystem will gradually recover and become similar to how it was before the flood.

• The ecosystem will stay damaged and never recover.

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

How can you tell the process in this diagram is secondary succession?

• The stages begin with a forest fire.

• The stages result in a climax community.

• The stages include pioneer species.

• The stages occur in a deciduous forest.

Tags

NGSS.MS-LS2-4