Unit 2: Intro, Eco Services, and Island Biogeography

How is genetic diversity best defined?

• The diversity within a species

• The number of species within the ecosystem

• The variety of ecosystems within a region

• The number of endemic species on a given island

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NGSS.MS-LS4-4

Which statement best describes the bottleneck effect?

• A population size is increased because of an environmental event. This increases the genetic variation and can increase biodiversity.

• A population size is reduced because of an environmental event. This reduces the genetic variation and can lead to a loss of biodiversity.

• A population size is reduced because of an environmental event. This increases the genetic variation and can lead to greater biodiversity.

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NGSS.HS-LS3-2

How is species richness best defined?

• The diversity within a species

• The variety of ecosystems within a region

• The number of species within the ecosystem

• The number of generalist species on a given island

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NGSS.MS-LS2-5

Ecosystem services that give humans products needed for survival, such as food and lumber, are called:

• provisioning services

• regulating services

• cultural services

• supporting services

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NGSS.MS-LS2-5

Ecosystem services that provide humans with beauty, spiritual benefits, and recreation are called:

• provisioning services

• regulating services

• cultural services

• supporting services

Ecosystem services that indirectly benefit humans and control the rate of events in an ecosystem, such as plants purifying air and bees pollinating plants, are called:

• provisioning services

• regulating services

• cultural services

• supporting services

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NGSS.MS-LS2-5

Ecosystem services that sustain human life and life on Earth, such as oxygen production and water cycling, are called:

• provisioning services

• regulating services

• cultural services

• supporting services

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NGSS.MS-LS2-5

The Theory of Island Biogeography suggests:

• greater species richness on islands that are smaller and farther from the mainland.

• greater species richness on islands that are smaller and closer to the mainland.

• greater species richness on islands that are larger and closer to the mainland.

• greater species richness on islands that are larger and farther from the mainland.

Organisms, like koalas, that require specific habitats and food resources are called:

• specialist species

• generalist species

• endemic species

• keystone species

Organisms, like cockroaches, that can live in a variety of habitats and feed on many different food sources are called:

• specialist species

• generalist species

• endemic species

• invasive species