Unit 2: Biodiversity Focus Sheet

Which of the following species is defined as one that is native to a specific geographic location and found nowhere else in the world?

• Invasive species

• Indicator species

• Endemic species

• Generalist species

Which of the following is a definition of keystone species?

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

• A species that is the most abundant in a given ecosystem.

• A species that is the largest predator in an ecosystem.

• A species that is the primary producer in an ecosystem.

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NGSS.MS-LS2-2

NGSS.MS-LS2-4

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What happens in a trophic cascade when the keystone species is removed from the ecosystem?

• The ecosystem remains unchanged.

• The population of prey species increases.

• The population of predator species increases.

• The ecosystem becomes more stable.

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NGSS.MS-LS2-3

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Define and give three examples of indicator species.

• Indicator species are organisms used to assess a specific environmental condition. Examples include frogs, lichens, and mayflies.

• Indicator species are organisms that are always found in polluted environments. Examples include cockroaches, rats, and pigeons.

• Indicator species are organisms that can survive in any environment. Examples include humans, dogs, and cats.

• Indicator species are organisms that are used for food by other species. Examples include grass, algae, and plankton.

Which of the following terms refers to the variety of life in the world or in a particular habitat or ecosystem?

• Genetic diversity

• Species diversity

• Biodiversity

• Habitat diversity

Tags

NGSS.MS-LS2-5

Resiliency is related to ecosystem diversity because:

• Ecosystem diversity increases the ability to recover from disturbances.

• Ecosystem diversity decreases the ability to recover from disturbances.

• Ecosystem diversity has no effect on resiliency.

• Ecosystem diversity only affects plant species.

Tags

NGSS.MS-LS2-5

How can a population bottleneck affect genetic diversity of a population?

• It increases genetic diversity.

• It decreases genetic diversity.

• It has no effect on genetic diversity.

• It stabilizes genetic diversity.

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NGSS.HS-LS4-4

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How does habitat loss affect specialist species and generalist species?

• Specialist species are more affected than generalist species due to their specific habitat requirements.

• Generalist species are more affected than specialist species due to their adaptability.

• Both specialist and generalist species are equally affected by habitat loss.

• Habitat loss does not affect either specialist or generalist species.

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NGSS.MS-LS2-1

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Is it better to protect habitats or to try to save individual species?

• Protect habitats

• Save individual species

• Both are equally important

• Neither is important

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NGSS.MS-LS2-4

NGSS.MS-LS2-5

Which of the following is an example of a provisioning ecosystem service?

• Pollination of crops

• Recreational activities

• Water purification

• Production of food

Tags

NGSS.HS-LS1-5