Chapter 1 - Terms to know Flashcards
Biodiversity
Variety of species in an ecosystem
Biological Species Concept
All organisms capable of breeding freely under natural conditions
Evolutionary change
Change that occurs in an entire population; usually occurs over a long period of time over great distances
Heterotroph
An organism that obtains energy-rich nutrients by consuming living or dead organisms
Autotroph
An organism that uses sources of energy to produce nutrients from water, gases, and/or minerals
Taxon/taxa
A taxonomic group or category
Taxonomy
Classification, identification, and naming of organisms
Binomial Nomenclature
A two name system where each organism is assigned a genus and a species
Genus name
Category
Species name
Something that describes the organism
Taxa names
Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species
Dichotomous key
Used to identify species
Phylogeny
Evolutionary relationship between and among species
Common ancestor
Ancestor that is shared with other organisms
Phylogenetic tree
How evolutionary relationships are represented
Clade
A taxonomic group that includes a single ancestor and all it’s descendants
Kingdoms
Plants, animals, fungi, protista, eubacteria, archaea
Domains
Eubacteria, archaea, and eukaryotes