*Unit 9 Part 1: Classification Flashcards
Classification
How many known species of organisms are there?
13 Billion
This is only what percentage of organisms that has ever lived?
5%
With regard to biological diversity, new organisms are still being…
found & identified.
Classification
The arrangement of organisms into orderly groups based on similarities and evolutionary relationships
Taxonomy
The science of identifying, classifying, and naming organisms
Taxon
A category into which related organisms are placed
There is a hierarchy of groups from broadest to most specific.
EX. Domain, Class, Family
There is a _____ of groups from _____ to most _____.
Hierarchy, Broadest, Specific
With regard to taxon, domain is…
the most inclusive and broadest.
With regard to taxon, species is…
the least inclusive and most specific.
What is the sentence to remember the order of classification?
Dumb King Phillip Came Over For Grape Soda.
What is the DOMAIN of humans?
Eukaryote
What is the KINGDOM of humans?
Animalia
What is the PHYLUM of humans?
Chordata
What is the CLASS of humans?
Mammalia
What is the ORDER of humans?
Primates
What is the FAMILY of humans?
Hominidae
What is the GENUS of humans?
Homo
What is the SPECIES of humans?
Homosapien
What are the four benefits of classifying?
~Accurately and uniformly names organisms
~Prevents misnomers such as starfish and jellyfish that are not really fish
~Uses same language for all names
~Modern classification systems can incorporate new scientific discoveries
What language is used for classification?
Latin or some Greek
Who was Carolus Linnaeus?
~Lived from 1707 to 1778
~18th century taxonomist
~Classified organisms by their structure
~Developed bionomial nomenclature naming system still used today
Who was an 18th century taxonomist?
Carolus Linnaeus
Who developed bionomial nomenclature naming system still used today?
Carolus Linnaeus
Binomial Nomenclature
~2-word naming system for scientific names (Genus and Species)
~Latin or Greek
~Italicized when typed, underlined when handwritten
~Genus is Capitalized
~species is lowercase
Two organisms with the same _____ are more closely related than two with the same _____.
Genus, species
What is the 2-word naming system for scientific names?
Binomial Nomenclature
Which two are more closely related?
A. Ailuropda melanoleuca
B. Ursus maritimus
C. Ursus arctos
B and C
Dichotomous Keys
~Used to identify organisms
~Start at beginning and follow a series of either/or steps
~Based on observable characteristics
What is the name of the tool used to identify organisms by starting at the beginning and following a series of either/or steps?
Dichotomous Keys
