SB5A

Which of the following is an example of a density-dependent limiting factor?

• temperature

• predation

• oxygen supply

• an earthquake

After the sharp rise, there was a leveling off of the population. What does this indicate?

• The life expectancy of the organisms in this population is about 30 days.

• This environment has only enough resources to support 250-300 individuals of this species.

• This organism needs 30 days to reach maturity before it can reproduce.

• This species is unable to reproduce in any habitat beyond a population of around 300 individuals.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of the following observations would lead to the classification of gopher tortoises as a keystone species in Georgia? Gopher tortoises–

• create habitats for hundreds of other species by digging underground burrows.

• maintain a diet that consists of a variety of native grasses, fruits, and legumes.

• can only reproduce at a rate of about six hatchlings every 10 years.

• live in forested regions where plenty of sunlight can reach the forest floor.

Tags

NGSS.MS-LS2-2

The populations of four species introduced into a new ecosystem are plotted on the graph provided.
Which species reached carrying capacity first?

• Species 1

• Species 2

• Species 3

• Species 4

Tags

NGSS.MS-LS2-1

What is a keystone species?

• A keystone species is a species that is the smallest in size within an ecosystem.

• A keystone species is a species that has no impact on its environment.

• A keystone species is a species that is only found in aquatic environments.

• A keystone species is a species that has a disproportionately large effect on its environment relative to its abundance.

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Which of the following would be a limiting factor affecting the population of Gasterosteus aculeatus?

• The average incubation period of three-spined stickleback eggs

• The population of similar organisms in nearby habitats

• The volume of water in the body of water in which the fish lives

• The seasonal variation in the amount of daylight

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of the following environmental changes will most likely lead to the greatest loss of biodiversity in a habitat?

• Loss of a top predator in a savannah

• Deforestation in a rainforest

• Periodic reduction of rainfall in a marsh

• Particularly severe winter in a mountain habitat

Tags

NGSS.MS-LS2-4

A system comprising of all the living and nonliving factors in an area and all of the interactions among them

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

Living and nonliving factors that restrict the growth of a population: _________ factors

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What is carrying capacity?

• The average lifespan of a species in a given environment.

• The rate at which a species reproduces in a given environment.

• The maximum population size of a species that the environment can sustain indefinitely.

• The total number of species in a given ecosystem.

Tags

NGSS.MS-LS2-4