Classification
Grouping of organisms or objects based on a set of criteria that helps organize, communicate and retain information
Taxonomy
Branch of biology that identifies names and classifies species based on their natural relationships
Binomial nomenclature
Linnaeus's system of naming organisms, which gives a scientific two-word Latin name to each species-the first part is the genus name and the second is the epithet.
Taxon
Named group of organism, such as phylum, genus or species
Genus
Taxonomic group of closely related species with a common ancester
Family
Taxonomic group of similar related genera that is smaller than an order and larger than a genus
Order
Taxonomic group that contains related families
Class
Taxonomic group that contains one or more related orders.
Phylum
Taxonomic group of related classes
Division
Taxonomic term used instead of phylum to group related classes of plants and bacteria.
Kingdom
Taxonomic Group of related Phyla or divisions
Domain
Taxonomic group of one or more kingdoms
Phylogeny
Evolutionary history of a species
Character
Inherited morphological or biochemical feature that varies among species and can be used to determine patterns of descent.
Cladistics
Taxonomic method that models evolutionary relationships based on shared derived characteristics and phylogenetic trees.
Cladogram
Diagram with branches that represents the hypothesized phylogeny or evolution of a species or group; uses bioinformatics, morphological studies and information from DNA studies.
Archaea
Prokaryotes whose cell walls do not contain peptidoglycan
Protist
Unicellular, multicellular, or colonial eukaryote whose cell walls may contain cellulose, can be plantlike, animal-like or funguslike.
Fungus
Unicellular or multicellular eukaryote that is stationary, absorbs nutrients from organic materials in the environment, and has cell walls that contain chitin
Why is it important to classify organisms?
Prevents misnomers such as starfish/jellyfish that aren't really fish
Who were the first taxonomists and what criteria did they use for classification?
Aristotle/Carolus Linnaeus, they classified organisms by their structure, behaviors and habitats.
Which taxonomist came up with the naming system still in use today?
Carolus Linnaeus
List the 8 taxa in order
Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species
What is the acronym that you can use to memorize the 8 taxa?
Dumb kids prefer candy over fresh green salad
Which 2 taxa are involved in naming
Genus and species
How do you handwrite scientific names?
First letter of the genus name in capital the rest not, underline both words.
How do you type a scientific name?
The first letter of the first word capitalized and the whole thing in italics
How do you abbreviate a scientific name
First letter of the genus and the specifies epithet
What language is used for scientific naming? Why?
Latin, it is the most widely understood
What is a species?
A group of organisms that can breed and produce fertile offspring
What is a node on a cladogram?
A place where a branch splits off from the rest of the cladogram
What is a clade on a cladogram?
One "Branch" or group on a cladogram
What is an outgroup on a cladogram?
They have no shared derived characteristics- used as a comparison.
Which clades are the most closely related on a cladogram?
The ones that are closest to each other.
Which clades are the least related on a cladogram?
The ones that are the farthest apart.
How is a dichotomous key used to identify organisms?
You answer the questions on the key to narrow down the organisms that it could possibly be.
What are the 3 domains?
Bacteria, Archaea, Eukarya
What are the 6 kingdoms?
Protista, Fungi, Plantae, Animalia, Bacteria, Archaea
Which domain does Bacteria belong to
Bacteria
What domain does Fungi belong to?
Eukarya
What domain does Animalia belong to?
Eukarya
What domain does Archaea belong to?
Archaea