Biodiversity and Classification Defintions

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Hierarchy
A system of ranking where smaller groups are nested components of larger groups.
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Species
A group of organisms that can interbreed to produce fertile offspring.
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Biodiversity
The number and variety of organisms found with a specified region.
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Analogous Structure
When structures have a corresponding structure and similar shape, but a different developmental origin.
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Phylogenic Classification
When closely related organisms are grouped together. Organisms in the same group have a more recent common ancestor with each other than organisms in a different group.
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State similar properties of organisms with the phylum Annelida.
They are segmented worms, e.g. earthworm, leeches.
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State similar properties of organisms with the phylum Arthropoda.
All of these have an exoskeleton, e.g. insects
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State similar properties of organisms with the phylum Chordate.
They all have a backbone, e.g. fish, amphibians, birds, reptiles, mammals.
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The Binomial System
They system of giving organisms a unique name, with two parts, a genus and a species.
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Homologous Structure
Structures with similar arrangements of component parts and developmental origin, but different functions. e.g. Pentadactyl limb.
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Taxon
Any group with a system of classification.
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Natural Selection.
The gradual process in which inherited characteristics become less common within a population, in response to the environment, determining the breeding success of individuals with those characteristics.
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Adaptation
A change by which a species becomes better adapted to its environment.
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Card 2

Front

Species

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A group of organisms that can interbreed to produce fertile offspring.

Card 3

Front

Biodiversity

Back

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Card 4

Front

Analogous Structure

Back

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Card 5

Front

Phylogenic Classification

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