Chapter 6 Flashcards

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1
Q

area where an organism lives including the biotic and abiotic factors that affect it

A

Habitat

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2
Q

ability of an organism to survive and reproduce under circumstances that differ from their optimal conditions

A

Tolerance

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3
Q

full range of physical and biological conditions in which an organism lives and the way in which the organism uses those conditions

A

Niche

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4
Q

any necessity of life, such as water, nutrients, light, food, or space

A

Resource

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5
Q

principle that states that no two species can occupy the same niche in the same habitat at the same time

A

competitive exclusion principle

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6
Q

single species that is not usually abundant in a community yet exerts strong control on the structure of a community

A

Keystone species

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7
Q

relationship in which two species live close together

A

Symbiosis

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8
Q

symbiotic relationship in which one organism benefits and the other is neither helped nor harmed

A

Commensalism

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9
Q

symbiotic relationship in which both species benefit from the relationship

A

Mutualism

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10
Q

a symbiotic relationship in which one organism lives on or inside another organism and harms it

A

Parasitism

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11
Q

series of gradual changes that occur in a community following a disturbance

A

Ecological Succession

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12
Q

succession that occurs in an area in which no trace of a previous community is present

A

Primary Succession

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13
Q

first species to populate an area during succession

A

Pioneer Species

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14
Q

type of succession that occurs in an area that was only partially destroyed by disturbances

A

Secondary Succession

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15
Q

the total of the variety of organisms in the biosphere; also called biological diversity

A

Biodiversity

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16
Q

variety of habitats, communities, and ecological processes in the biosphere

A

Ecosystem Diversity

17
Q

number of different species that makes up a particular area

A

Species Diversity

18
Q

sum total of all the different forms of genetic information carried by a particular species, or by all organisms on Earth

A

Genetic Diversity

19
Q

the ability to recover after a disturbance; the ability to deal with change and move on

A

Resilience

20
Q

the benefits for humans that are provided by healthy ecosystems

A

Ecosystem services