click below
click below
Normal Size Small Size show me how
Kingdoms/Taxonomy
7th Texas
Question | Answer |
---|---|
taxonomy | the science of classifying living things |
hierarchical classification system | a category that unites groups in the level below it based on shared properties |
binomial nomenclature | refers to two names given to an organism (example: Homo sapiens) |
Archae | ancient, unicellular prokaryotic organisms; some are chemosynthetic |
Bacteria | unicellular prokaryotic organisms; some are helpful and some cause disease |
Protista | unicellular eukaryotic organisms that move around in water; some are autotrophs, some are heterotrophs |
Fungi | multi-cellular non-motile organisms with a cell wall made of chitin; all are heterotrophic |
Plantae | multicellular, non-motile photosynthetic autotrophs; their cells have a cell wall & contain chloroplasts |
Animalia | multicellular, motile heterotrophs; cell do NOT have a cell wall |
kingdom | all living organisms on Earth fit into one of these six - |
phylum | subdivision of a kingdom, grouping together all classes of organisms that have the same body plan |
class | subdivision of a phylum consisting of several orders |
order | subdivision of a class consisting of several families |
family | subdivision of an order consisting of several subdivision of a class or subclass in the classification of organisms, consisting of several genera |
genus | subdivision of a family consisting of more than one species |
species | subdivision of a genus composed of related individuals that resemble one another, are able to breed among themselves, but are not able to breed with members of another species |
dichotomous key | a key used to identify an organism in which each stage presents descriptions of two distinguishing characters, with a direction to another stage in the key, until the species is identified |
heterotroph | "other" feeder; feeds on others |
autotroph | "self" feeder; produces own food |
chemosynthetic | makes own food using energy from chemicals |
photosynthetic | makes own food using energy from sunlight |
prokaryote | single-celled organism that does NOT contain a nucleus |
eukaryote | a cell that contains a nucleus |