Ecosystem Populations

The nonliving physical environment of an ecosystem is the __________ component.

• abiotic

• biotic

• diverse

• living

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NGSS.MS-LS2-3

A community of organisms living together with their physical environment is a(n)

• biome

• biosphere

• ecosystem

• atmosphere

This is the study of interactions between organisms and the interactions that organisms have with their environment.

• Evolution

• Ecology

• Biology

• Commensalism

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NGSS.MS-LS2-2

NGSS.MS-LS2-3

What are the five levels of environmental organization, from largest to smallest?

• biosphere, ecosystem, community, population, organism

• ecosystem, biosphere, population, organism, community

• biosphere, population, ecosystem, community, organism

• biosphere, ecosystem, population, community, organism

Which is most likely to be a primary consumer?

• herbivore

• carnivore

• omnivore

• multivore

What is the maximum number of individuals an ecosystem can support?

• population density

• carrying capacity

• succession limit

• habitat maximum

Many different organisms live in Amanda’s garden. The diagram shows a simple food web of some of the organisms in her garden. Predation helps maintain the stability of an ecosystem. Which statement BEST describes how this garden ecosystem can benefit from the presence of snakes?

• The snakes provide an energy source for the moles.

• The snakes consume the mice best adapted to their environment.

• The snakes eat moles, which allows the population of mice to increase.

• The snakes keep the mice from overpopulating, which could deplete plant resources.

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Significant destruction of a forest habitat will increase which gas in the atmosphere?

• CO2 (carbon dioxide)

• NO2 (nitrogen dioxide)

• O2 (oxygen gas)

• N2 (nitrogen gas)

In any ecosystem, organisms interact with biotic and abiotic parts of the environment. As a result of all of the interactions, the matter within the system is

• produced when plants grow.

• recycled when organisms die.

• lost when animals and plants die.

• formed when new animals are born.

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

How does the energy in each trophic level of an energy pyramid compare to the energy in the preceding level?

• It has about 5% of the energy from the level below it.

• It has about 10% of the energy from the level below it.

• It has about 15% of the energy from the level below it.

• It has about 20% of the energy from the level below it.

Tags

NGSS.MS-LS2-3