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Flashcards in Classification Deck (20):
1

Classification

process by which scientists group living organisms

2

Taxonomy

is the science of defining and naming groups of biological organisms on the basis of shared characteristics.

3

Binomial nomenclature

system of nomenclature in which each species of animal or plant receives a name of two terms of which the first identifies the genus to which it belongs and the second the species itself.

4

Taxon

a taxonomic group of any rank, such as a species, family, or class.

5

Genus

A taxonomic category ranking used in biological classification that is below a family and above a species level, and includes group(s) of species that are structurally similar

6

Family

is one of the eight major taxonomic ranks; it is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks above the rank of genus.

7

Order

taxonomic rank used in the classification of organisms and recognized by the nomenclature codes. Other well-known ranks are life, domain, kingdom, phylum, class, family, genus, and species, with order fitting in between class and family.

8

Class

a taxonomic rank. descending order of size are life, domain, kingdom, phylum, order, family, genus, and species, with class fitting between phylum and order.

9

Phylum

A group of Classes with similar distinctive characteristics

10

Division

division refers to a rank equivalent to phylum.

11

Kingdom

The highest classification into which living organisms are grouped

12

Domain

also superkingdom or empire, is the highest taxonomic rank of organisms

13

Phylogeny

The evolutionary development and history of a species or higher taxonomic grouping of organisms

14

Characters

any observable feature, or trait, of an organism, whether acquired or inherited.

15

Molecular clock

is a technique that uses the mutation rate of biomolecules to deduce the time in prehistory when two or more life forms diverged

16

Cladistics

A system of classification based on the phylogenetic relationships and evolutionary history of groups of organisms, rather than purely on shared features

17

Cladogram

a branching diagram showing the cladistic relationship between a number of species.

18

Archaea

Any of the unicellular microorganisms that is genetically distinct from bacteria and eukaryotes, and often inhabiting extreme environmental conditions

19

Protists

eukaryotic organisms that cannot be classified as a plant, animal, or fungus

20

Fungus

molds, mildews, mushrooms, rusts, and smuts, that are parasites on living organisms or that feed upon dead organic material