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17 Cards in this Set

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SPECIES
Organisms of the same kind that interbreed and produce live, fertile offspring
COMMUNITY
interacting plants, animals, and micro-organisms living in the same area. All the LIVING THINGS in an area.
POPULATIONS
group of individuals of the same species, in the same area which constitutes and interbreeding, reproducing group
ECOSYSTEMS
the biological community and the physical environment on which they depend
BIOSPHERE
zone of air, land, and water on the surface of the earth that is occupied by living things
CLINE
gradual variation in the group of organisms over a geographic range
ECOLOGY
the study of relationships between organisms and their Environment
ALLOPATRIC SPECIES
when parts of a species are spearated from each other (geographic isolation)
SYMPATRIC SPECIES
when members of a species are together (not separated)
HYBRID
offspring from groups that generally do not breed in nature
TAXONOMY
study of classifications of living things
LINNAEUS
a taxonomist who worked in a museum and classified organisms using the morphological definition of species
MORPHOLOGICAL DEFINITION OF SPECIES
grouping according to physical similarities
DARWIN
a naturalist who worked in the field studying plants and animals in their natural environment. His observations contributed to the biological definition of species.
2 PROBLEMS WITH A CLEAR DETERMINATION OF SPECIES IN NATURE
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
COMPARE/CONTRAST DARWIN'S CONCEPT OF SPECIES WITH (SPECIMEN) lINNAEUS'S
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.
TYPE SPECIMEN
Used with the morphological definition ofspecies. Means a perfect example of a member of a species.