The Biology Coach: AH Bio; Topic 2, Key Area 5a

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9 Terms

1
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Ecological niche

multi-dimensional summary of tolerances and requirements of a species.

2
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Fundamental niche

A species occupies this in the absence of interspecific competition

3
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Realised niche

Is occupied in response to interspecific competition

4
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Competitive exclusion

As a result of interspecific competition, competitive exclusion can occur where the niches of 2 species are so similar that one declines to local extinction

5
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Resource partitioning

Where the realised niches are sufficiently different that potential competitors can co-exist by dividing the resource.

6
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Parasitism

A symbiotic interaction between a parasite and its host.

7
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Degenerate

A parasite is described as degenerate as it lacks structures and organs found in other organisms.

8
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Ectoparasite

Parasite that lives on the surface of a host

9
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Endoparasite

Parasite that lives within the tissues of its host