Variety of organisms considered at all levels from populations to ecosystems.
The science of describing, naming, and classifying organisms.
Particular group within a taxonomic system.
Linnaeus's largest category of nested hierachy.
Categories above the kingdom level.
Subsets below the kingdom level.
Traditional taxonomic system for plants, the category contained within a kingdom and containing classes.
Each phylum consists of this.
Each class contains this.
Smallest grouping, which contains only a single kind of organism.
Two part name system.
Variations of a species that live in different geographic areas.
The goal is to classify organisms in terms of their natural relationships.
The analysis of the evolutionary or ancestral relationships among taxa.
Systematists often represent their hypothesis in the form of this.
System of phylogenetic analysis that uses shared and derived characters as the only criteria for grouping taxa.
Feature that all members of a group have in common.
Feature that evolved only within the group under consideration.
Group of organisms that includes an ancestor plus all of its descendants.
Cladists create phylogenetic diagrams called these.
Made up of small, single celled prokaryotic organisms that usually have a cell wall and reproduce by cellular fission.
The second domain also consists of prokaryotes.
Consists of eukaryotic organisms.
Aligns with the domain bacteria.
Aligns with the domain archaea.
One of the four kingdoms of eukaryotes.
The second kingdom of eukaryotes.
The third kingdom of eukaryotes, which consists of eukaryotic, multicellular plants.
The fourth kingdom of eukaryotes.