FCHS Envi Sci: SEV2.d Part 1 Quiz

What is a keystone species?

• A species that is the most abundant in an ecosystem

• A species that has a disproportionately large effect on its environment relative to its abundance

• A species that is native to a particular region

• A species that is introduced to a new environment

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DOK Level 1: Recall

Which of the following is an example of a native species?

• Zebra mussels in the Great Lakes

• Bald eagle in North America

• Cane toads in Australia

• European starlings in the United States

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DOK Level 1: Recall

Describe the role of foundation species in an ecosystem.

• They are the top predators that control the population of other species.

• They create or maintain habitats for other species.

• They are species that have been introduced to a new environment.

• They are species that are at risk of extinction.

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DOK Level 2: Skill/Concept

Which statement best supports the claim that biodiversity increases ecosystem resilience.

• Biodiversity leads to more competition among species, which weakens the ecosystem.

• Biodiversity ensures that there are multiple species that can perform similar ecological roles, providing redundancy.

• Biodiversity decreases the number of species that can adapt to environmental changes.

• Biodiversity has no effect on ecosystem resilience.

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DOK Level 3: Strategic Thinking

Why are native species important for maintaining ecosystem balance?

• They are always the most numerous species in an ecosystem.

• They have evolved to fill specific niches and maintain ecological relationships.

• They are the primary producers in an ecosystem.

• They are the top predators in an ecosystem.

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DOK Level 2: Skill/Concept

How do keystone species contribute to the stability of an ecosystem?

• By being the most numerous species in the ecosystem

• By controlling the population sizes of other species and maintaining balance

• By being the primary producers in the ecosystem

• By being the top predators in the ecosystem

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DOK Level 2: Skill/Concept

Which of the following is an example of a foundation species?

• Sea otters in kelp forests

• Beavers in freshwater ecosystems

• Wolves in Yellowstone National Park

• Bald eagles in North America

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DOK Level 1: Recall

What is the impact of biodiversity on the resilience of ecosystems facing climate change?

• Higher biodiversity generally decreases the resilience of ecosystems to climate change.

• Higher biodiversity generally increases the resilience of ecosystems to climate change.

• Biodiversity has no impact on the resilience of ecosystems to climate change.

• Only keystone species affect the resilience of ecosystems to climate change.

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DOK Level 3: Strategic Thinking

Based on the graph shown, what is the effect of removing a keystone species from an ecosystem?

• biodiversity goes up

• biodiversity goes down

• biodiversity stays about the same

• not enough information to tell

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NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Which type of community is more resilient to change?

• Less diversity & fewer habitats

• Less diversity & more habitats

• More diversity & fewer habitats

• More diversity & more habitats

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NGSS.MS-LS2-4

NGSS.MS-LS2-5