Biodiversity Review - 303

Biodiversity, aka biological diversity, usually refers to

• the same species in a general location

• the number of different species in a given area

• the number of animal species in a given area

• the number of plant species in a given area

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Species that are clearly critical to the functioning of an ecosystem are known as

• biodiversity

• keystone species

• main species

• native species

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A species that is likely to become extinct if protective measures are not taken immediately is known as

• threatened species

• endemic species

• keystone species

• endangered species

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An invasive species is

• a species that is not native to a particular region

• a newly discovered species in a particular region

• a genetically modified species in a particular region

• a species that is native to a particular region

a species that is not native to a particular region and has no natural predators and little competition

• consumer species

• producer species

• invasive species

• adapted species

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How do biodiversity and sustainability work together?

• The lower the biodiversity the greater the sustainability.
• The higher the biodiversity, the less sustainable the ecosystem
• The higher the biodiversity, the greater the sustainability.
• Biodiversity has nothing to do with sustainability.

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High biodiversity is 

• having a lot of the same organism.
• having a few of the same organism.
• having a lot of variety of different organisms.
• only having one of each organism. 

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How can humans best help an endangered species avoid extinction?

• they can feed the animals
• they can put the animals in a zoo
• they can protect the animal’s habitat
• they can take the animal to new habitats

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Why should humans work to prevent biodiversity loss?

• Humans depend on other organisms to meet their basic needs for survival

• Species extinction has been a rare occurrence throughout human history

• Extinctions are common and expected therefore biodiversity loss is not a concern

• Both humans depend on other organisms to meet their basic needs for survival and Species extinction has been a rare occurrence throughout human history

A species form that supports an entire ecosystem.

• Keystone Species

• Herbivores

• Umbrella Species

• Predators

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