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17 Cards in this Set
- Front
- Back
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SPECIES
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Organisms of the same kind that interbreed and produce live, fertile offspring
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COMMUNITY
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interacting plants, animals, and micro-organisms living in the same area. All the LIVING THINGS in an area.
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POPULATIONS
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group of individuals of the same species, in the same area which constitutes and interbreeding, reproducing group
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ECOSYSTEMS
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the biological community and the physical environment on which they depend
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BIOSPHERE
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zone of air, land, and water on the surface of the earth that is occupied by living things
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CLINE
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gradual variation in the group of organisms over a geographic range
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ECOLOGY
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the study of relationships between organisms and their Environment
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ALLOPATRIC SPECIES
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when parts of a species are spearated from each other (geographic isolation)
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SYMPATRIC SPECIES
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when members of a species are together (not separated)
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HYBRID
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offspring from groups that generally do not breed in nature
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TAXONOMY
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study of classifications of living things
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LINNAEUS
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a taxonomist who worked in a museum and classified organisms using the morphological definition of species
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MORPHOLOGICAL DEFINITION OF SPECIES
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grouping according to physical similarities
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DARWIN
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a naturalist who worked in the field studying plants and animals in their natural environment. His observations contributed to the biological definition of species.
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2 PROBLEMS WITH A CLEAR DETERMINATION OF SPECIES IN NATURE
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Where to separate species in a cline. Example: the salamanders.
How can one predict (if a species is allopatric) whether it is one species or two. Example:Flickers |
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COMPARE/CONTRAST DARWIN'S CONCEPT OF SPECIES WITH (SPECIMEN) lINNAEUS'S
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Darwin: Species have variation; Species are changing. based on observations in the field, and behavior
Linnaeus: species have little variation(TYPE SPECIMEN); species are not changing. Based on physical characteristics observed in lab or museum. |
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TYPE SPECIMEN
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Used with the morphological definition ofspecies. Means a perfect example of a member of a species.
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