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15 Cards in this Set
- Front
- Back
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variation |
differences in characteristics of organisms caused by genetic and environmental factors |
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biological diversity |
the number and variety of organisms in an area |
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species |
a group of organisms that share similar genetic and physical characteristics; generally these organisms can interbreed and produce fertile offspring |
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speciation |
the evolution of different species from a single ancestor |
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structural adaptation |
an inherited physical characteristic that helps an organism survive it its environment |
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behavioural adaptation |
an inherited characteristic behaviour that helps an organism survive in its environment |
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diversity index |
a measure of the biological diversity in an area |
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environment |
the area or conditions in which an organism lives; sometimes used to refer exclusively to natural areas on earth |
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competition |
the struggle among individual organisms for access to a limited resource, such as a food or territory |
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broad niche |
the roles or characteristic activities filled by a generalist organism |
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generalist |
an organism with generalized requirements and adaptations that allow it to survive in variable conditions and depend on a variety of food sources; generalists tend to have broad niches |
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narrow niche |
a highly specialized role or characteristic activity undertaken by an organism in an ecosystem |
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specialist |
a type of organism that is adapted to very specific environments and having a narrow niche |
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specialization |
adaptations for surviving in very specific environments |
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symbiotic |
an interaction between organisms of different species living in close proximity to each other in a relationship that lasts over time |
