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animal

animal  

Animal Farm a fable (1945) by George Orwell which consists of a satire on Russian Communism as it developed under Stalin. The animals of the farm, led by the pigs, revolt against the cruel farmer, ...
archaea

archaea  

The domain comprising what were formerly known as the archaebacteria. What used to be the kingdom Archaebacteria has been split into two kingdoms: Crenarchaeota and Euryarchaeota. The domain Archaea ...
Bacteria

Bacteria  

One of three superkingdoms (domains) of cellular organisms, the others being Archaea and Eukarya. Bacteria are unicellular and anucleate i.e. prokaryotes. They embrace a great diversity of forms, ...
classification

classification  

1. the process of grouping organisms on the basis of features they have in common, or on the basis of their ancestry, or both. 2. the resulting arrangement of living things into groups as a ...
domain

domain  

The highest taxonomic category in a classification system based on comparisons of ribosomal RNA. There are three domains: Archaea; Eubacteria; and Eukarya. Each domain comprises organisms that are ...
domain

domain  

1. a homology unit; i.e., any of the three or four homologous regions of an immunoglobulin heavy chain that apparently evolved by duplication and diverged by mutation. 2. any discrete, continuous ...
Eubacteria

Eubacteria  

One of the three major domains of living organisms, comprising aerobic and anaerobic bacteria occurring in virtually all habitats. Some live in or on the bodies of other organisms, and may cause ...
eukaryote

eukaryote  

An organism consisting of cells in which the genetic material is contained within a distinct nucleus. All organisms except bacteria are eukaryotes. See Eukarya. Compare prokaryote.
Euryarchaeota

Euryarchaeota  

1 In the widely-used five-kingdom system for classifying organisms, a phylum within the subkingdom Archaea in the kingdom Bacteria.2 In the three-domain classification, the more derived (see ...
fungus

fungus  

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Overview Page
n. ( pl. fungi) a simple organism (formerly regarded as a plant) that lacks the green pigment chlorophyll. Fungi include the yeasts, rusts, moulds, and mushrooms. They live either as saprophytes or ...
gymnosperm

gymnosperm  

Any plant whose ovules and the seeds into which they develop are borne unprotected, rather than enclosed in ovaries, as are those of the flowering plants (the term gymnosperm means naked seed). In ...
kingdom

kingdom   Reference library

Oxford Dictionary of Biochemistry and Molecular Biology (2 ed.)

Reference type:
Subject Reference
Current Version:
2008
Subject:
Science and technology, Life Sciences
Length:
29 words

the highest level of taxonomic classification. All organisms fall into one of three currently accepted kingdoms, each of which has

kingdom

kingdom   Quick reference

World Encyclopedia

Reference type:
Subject Reference
Current Version:
2004
Subject:
Encyclopedias
Length:
78 words

Topmost level (taxon) of the most widely adopted taxonomy for living organisms, the Five Kingdoms system. The Five Kingdoms are

Linnaean classification

Linnaean classification  

A hierarchical method (developed by Linnaeus) for naming organisms in which each individual is assigned to a species, genus, family, order, class, phylum, and kingdom, and some intermediate ...
Monera

Monera  

In some taxonomic schemes, one of the 5 kingdoms of life, comprising the prokaryotic Cyanophyta' (cyanobacteria) and ‘Schizomycophyta’ (other bacteria). Prokaryotes are currently placed into more ...
organism

organism  

Any living thing, including a human or other animal, a plant, a fungus, a protist, a bacterium, or a virus. See also kingdom (2). [From organize]
phylogenetic

phylogenetic  

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Overview Page
Describing a system of classification of organisms that aims to show their evolutionary history. Compare phenetic.
phylum

phylum  

Reference type:
Overview Page
In animal taxonomy, one of the major groupings, coming below subkingdom and kingdom, and comprising superclasses, classes, and all lower taxa.
plant

plant  

Any organism of the kingdom Plantae. Plants are characterized by their ability to effect photosynthesis and the possession of rigid cell walls that contain cellulose.
plant kingdom

plant kingdom  

The taxonomic kingdom (Plantae) that comprises all living or extinct plants.

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