Ch. 10 Key Terms Flashcards

1
Q

Biodiversity

A

the variety of organisms in a given area, the genetic variation within a population, the variety of species in a community, or the variety of communities in an ecosystem

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2
Q

gene

A

a segment of DNA that is located in a chromosome and that codes for a specific hereditary trait

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3
Q

keystone species

A

a species that is critical to the functioning of the ecosystem in which it lives because it affects the survival and abundance of many other species in its community

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4
Q

ecotourism

A

a form of tourism that supports the conservation and sustainable development of ecologically unique areas

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5
Q

endangered species

A

a species that has been identified to be in danger of extinction throughout all or a significant part of its range, and that is thus under protection by regulations or conservation measures

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6
Q

threatened species

A

a species that has been identified to be likely to become endangered in the foreseeable future

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7
Q

exotic species

A

a species that is not native to a particular region

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8
Q

poaching

A

the illegal harvesting of fish, game, or other species

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9
Q

endemic species

A

a species that is native to a particular place and that is found only there

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10
Q

germ plasm

A

hereditary material (chromosomes and genes) that is usually contained in the protoplasm of germ cells

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11
Q

endangered species act

A

an act that the U.S. Congress passed in 1973 to protect any plant or animal species in danger of extinction

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12
Q

habitat conservation plan

A

a land-use plan that attempts to protect threatened or endangered species across a given area by allowing some tradeoffs between harm to the species and additional conservation commitments among cooperating parties

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13
Q

biodiversity treaty

A

an international agreement aimed at strengthening national. control and preservation of biological resources; associated with the UN Conference on environment and development (UNCED or Earth summit) in 1992

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