Test Review 8.L.3 Populations & Ecosystems

Which shows the correct flow of energy through this simple food chain?

• fox → grass → rabbit

• grass → fox → rabbit

• grass → rabbit → fox

• rabbit → grass → fox

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

Where is the largest amount of energy in a food web?

• scavengers

• producers

• decomposer

• consumers

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NGSS.MS-LS1-7

NGSS.MS-LS2-3

Which statement about parasitism is most correct?

• Both organisms benefit.

• One organism benefits and the other is not affected.

• Neither organism benefits.

• One organism benefits and the other is negatively affected.

State the relationship between a fox and a rabbit .

• parasitism

• predator and prey

• mutualism

• commensalism

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NGSS.MS-LS2-2

Bees and butterflies help pollinate plants, enabling them to reproduce while getting nectar from those plants. Which is best represented by this relationship?

• mutualism

• predator and prey

• parasitism

• competition

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NGSS.MS-LS2-2

Which term best describes two predators living in the same habitat who feed on the same prey?

• Mutualism

• Competition

• Predation

• Commensalism

Commensalism is a symbiotic relationship in which what occurs between the organisms?

• both organisms are harmed

• one benefits, the other is harmed

• one benefits by eating the other

• one benefits, the other is unaffected

Which statement best explains the flow of energy as it moves through the different levels?

• Energy is unavailable because it is used up by the organisms at Level 1.

• Energy decreases as it is lost as heat to the environment.

• Energy increases as it is gained from the environment.

• Energy is transferred as it is produced by organisms in the next level.

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NGSS.MS-LS2-3

Limiting factors which impact the size of a population no matter how large that population is.

• Density Independent Limiting Factors

• Density Dependent Limiting Factors

• Exponential Growth

• Carrying Capacity

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NGSS.MS-LS2-4

When a specific population grows past the ecosystem's carrying capacity, what happens to the population?

• Density Independent limiting factors start to occur resulting in the population going farther above carrying capacity.

• The population will go extinct due to lack of resources

• The population grows then finds a new carrying capacity

• Density Dependent limiting factors start to occur resulting in the population going back below carrying capacity.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4