Relationships in Ecosystems

True or False: The population size of predators are equal to the population size of prey.

• True

• False

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NGSS.MS-LS2-2

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Any relationship in which two different species use each other to live is called _________________.

• Predation

• Symbiosis

• Competition

• Harmony

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NGSS.MS-LS2-2

______________ occurs when one organism captures and feeds on another organism.

• Predation

• Symbiosis

• Competition

• Dependent

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NGSS.MS-LS2-2

When two or more individuals or populations attempt to obtain a single resource.

• Competitive interaction

• Mutually beneficial interaction

• Dependent interaction

• Predatory interaction

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NGSS.MS-LS2-1

An interaction between organisms or species that is helpful to both.

• Dependent interaction

• Predatory interaction

• Mutually beneficial interaction

• Competitive interaction

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NGSS.MS-LS2-2

Which is an example of parasitism?

• Shark and seal

• Flea and dog

• Deer and grass

• Seagull and fish

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NGSS.MS-LS2-2

How all the living and nonliving things in an area interact.

• Competition

• Symbiosis

• Dependent

• Ecosystem

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NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What is an example of a predator–prey relationship?

• Bacteria and humans

• Fox and rabbit

• Tick and deer

• Lion and hyena

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NGSS.MS-LS2-4

In this food web, which animals are in competition?

• Hawks and coyotes

• Squirrels and hawks

• Antelopes and squirrels

• Hawks and mountain lions

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NGSS.MS-LS2-2

NGSS.MS-LS2-1

An organism that is "hunted" and "eaten" as food is called ______________________.

• Prey

• Predator

• Host

• Parasite