Ecological Quiz

What is carrying capacity in an ecosystem?

• The maximum population size an environment can sustain indefinitely

• The minimum number of species needed in a food web

• The rate at which organisms reproduce

• The amount of sunlight available to producers

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NGSS.MS-LS2-4

Which of the following best describes an invasive species?

• A native species that is becoming extinct

• A non-native species that causes harm to an ecosystem

• A species that only lives in one specific habitat

• A predator at the top of a food chain

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NGSS.MS-LS2-2

In an energy pyramid, approximately how much energy is transferred between each trophic level?

• 90%

• 50%

• 10%

• 1%

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NGSS.MS-LS2-3

What typically happens to a native species when an invasive species enters its habitat?

• It immediately becomes extinct

• It always adapts and thrives

• It may experience population decline due to competition

• It automatically changes its diet

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NGSS.MS-LS2-2

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Which statement about food webs is correct?

• Energy flows in a circular pattern

• Energy flows in one direction, from producers to consumers

• Decomposers are not part of food webs

• Top predators always have the largest population

Tags

NGSS.MS-LS2-3

What factors can influence an ecosystem's carrying capacity?

• Only the amount of available food

• Only the amount of available water

• Only the amount of living space

• Multiple factors including food, water, space, and other resources

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NGSS.MS-LS2-1

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In a food web, what happens if one species is removed?

• Only that species is affected

• The entire food web collapses immediately

• Multiple species may be affected through direct and indirect relationships

• Only the species' immediate predator is affected

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NGSS.MS-LS2-2

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When a population exceeds carrying capacity, what typically occurs?

• The environment expands to accommodate more organisms

• Population numbers decrease due to limited resources

• The species develops new adaptations immediately

• Nothing changes in the ecosystem

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NGSS.MS-LS2-1

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Which statement about energy pyramids is true?

• Energy increases at each higher level

• Decomposers are at the top

• Energy decreases at each higher level

• Energy remains constant throughout

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NGSS.MS-LS1-6

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How do invasive species often outcompete native species?

• They are always larger in size

• They lack natural predators and grow unchecked

• They produce less offspring

• They require fewer resources

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NGSS.MS-LS2-2

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