CCE4 Community Ecology: Feel the Love - Crash Course Ecology #4

What is the main focus of community ecology?

• Interactions between species

• Climate change

• Plant growth

• Animal behavior

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NGSS.MS-LS2-2

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What is the Competitive Exclusion Principle?

• Two species can coexist indefinitely

• One species will always eliminate the other when competing for the same resources

• Species always share resources equally

• Species never compete for resources

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NGSS.MS-LS2-1

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Who first identified the Competitive Exclusion Principle?

• E. O. Wilson

• G. F. Gause

• Robert MacArthur

• Charles Darwin

What is an ecological niche?

• The sum of all resources a species uses in its environment

• A place where an organism lives

• A type of animal

• A type of plant

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NGSS.MS-LS2-2

What is a fundamental niche?

• A type of habitat

• The actual conditions a species lives in

• A type of competition

• The ideal set of conditions for a species

What is a realized niche?

• The actual conditions a species lives in

• A type of habitat

• A type of competition

• The ideal set of conditions for a species

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NGSS.MS-LS2-4

What is resource partitioning?

• When similar species settle into separate niches to coexist

• When species share the same resources equally

• When species compete for the same resources

• When one species eliminates another

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Who discovered resource partitioning among warblers?

• E. O. Wilson

• Charles Darwin

• G. F. Gause

• Robert MacArthur

What is character displacement?

• When species share resources equally

• When traits that minimize competition are selected for

• When species become more similar over time

• When species eliminate each other

What is mutualism?

• When both species benefit

• When one species benefits and the other is harmed

• When neither species benefits

• When one species benefits and the other is unaffected

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NGSS.MS-LS2-2