diversity of life
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25 Terms
Taxonomy
The science of classifying organisms.
Systematics
The science of determining the evolutionary relationships of organisms.
Phylogeny
The evolutionary history and relationship of an organism or group of organisms.
Vertebrate
An organism that has a backbone.
Invertebrate
An organism that does not have a backbone.
Classification ranks
The hierarchical system used in taxonomy, including Domain, Kingdom, Phylum, Class, Order, Family, Genus, and Species.
Phylogenetic tree
A diagram that illustrates evolutionary relationships among species or groups of species.
Homo sapiens
The species name for modern humans.
Australopithecus
An early genus of hominins that lived between 2.5 and 4 million years ago.
Lucy
A famous Australopithecus afarensis specimen discovered in Ethiopia that lived around 3.2 million years ago.
Invertebrate
An organism that does not have a backbone.
Classification ranks
The hierarchical system used in taxonomy, including Domain, Kingdom, Phylum, Class, Order, Family, Genus, and Species.
Phylogenetic tree
A diagram that illustrates evolutionary relationships among species or groups of species.
Homo sapiens
The species name for modern humans.
Australopithecus
An early genus of hominins that lived between 2.5 and 4 million years ago.
Lucy
A famous Australopithecus afarensis specimen discovered in Ethiopia that lived around 3.2 million years ago.
Common ancestor
An ancient organism from which different species have evolved.
Evolutionary relationships
The connections between species based on their shared ancestry and evolutionary history.
Eukarya
One of the three domains of life, consisting of organisms with eukaryotic cells.
Animalia
The kingdom that includes all animals.
Chordata
The phylum that includes all vertebrates and some invertebrates.
Mammalia
The class of animals known as mammals, characterized by mammary glands.
Carnivora
The order that includes carnivorous mammals.
Ursidae
The family that includes bears.
Genus and species
The two parts of a scientific name that classify an organism specifically.