biological group

a group of organisms sharing a specific genetic constitution

a group of biological taxa or species that share features inherited from a common ancestor

animal or plant group having natural relations

a group of animals

a group of organisms of the same type living or growing together

(biology) a group of organisms forming a subdivision of a larger category

group of genetically related organisms constituting a single step in the line of descent

all of the offspring of a given progenitor

in some classifications considered a kingdom

one-celled monerans having simple cells with rigid walls and (in motile types) flagella

prokaryotic organisms sometimes considered a class or phylum or subkingdom; coextensive with the Cyanophyceae: cyanobacteria (blue-green algae)

former term for the Cyanophyta

algae having chlorophyll a and usually c, and flagella of unequal lengths; terminology supersedes Chrysophyta in some classifications

mostly freshwater eukaryotic algae having the chlorophyll masked by brown or yellow pigment; yellow-green and golden-brown algae and diatoms: Xanthophyceae, Chrysophyceae, Bacillariophyceae; some classification systems superseded or subsumed by Heterokontophyta

coextensive with class Phaeophyceae; in some classifications subsumed in the division Heterokontophyta

free-swimming flagellate algae

large division of chiefly freshwater eukaryotic algae that possess chlorophyll a and b, store food as starch, and cellulose cell walls; classes Chlorophyceae, Ulvophyceae, and Charophyceae; obviously ancestral to land plants

lower plants; mostly marine and littoral eukaryotic algae

a division of the order Therapsida from the Triassic period comprising small carnivorous tetrapod reptiles often with mammal-like teeth

a division of Therapsida

extinct small mostly diurnal lower primates that fed on leaves and fruit; abundant in North America and Europe 30 to 50 million years ago; their descendents probably include the lemurs; some authorities consider them ancestral to anthropoids but others consider them only cousins

extinct tiny nocturnal lower primates that fed on fruit and insects; abundant in North America and Europe 30 to 50 million years ago; probably gave rise to the tarsiers; some authorities consider them ancestral to anthropoids but others consider them only cousins

a group of vertebrates comprising both cartilaginous and bony fishes and sometimes including the jawless vertebrates; not used technically

the highest taxonomic group into which organisms are grouped; one of five biological categories: Monera or Protoctista or Plantae or Fungi or Animalia

(biology) a taxonomic group comprising a major division of a kingdom

organisms sharing a specified genotype or the genotype (or peculiarities) so shared

two or more draft animals that work together to pull something

the young of an animal cared for at one time

a group of birds

a group of sheep or goats

a group of cattle or sheep or other domestic mammals all of the same kind that are herded by humans

a group of wild mammals of one species that remain together: antelope or elephants or seals or whales or zebra

a group of hunting animals

a group of aquatic mammals

a group of lions

a group of cats

a large group of fish

in some social insects (such as ants) a physically distinct individual or group of individuals specialized to perform certain functions in the colony

(microbiology) a group of organisms grown from a single parent cell

a colony of rabbits

(biology) a taxonomic category consisting of members of a species that differ from others of the same species in minor but heritable characteristics

a special variety of domesticated animals within a species

(biology) the major taxonomic group of animals and plants; contains classes

(biology) a taxonomic group ranking between a phylum and a class

(biology) a taxonomic group ranking between a phylum and below a class or subclass

(biology) a taxonomic group containing one or more orders

(biology) a taxonomic category below a class and above an order

(biology) a taxonomic class below a phylum and above a class

(biology) taxonomic group containing one or more families

(biology) taxonomic group that is a subdivision of an order

(biology) a taxonomic group ranking above an order and below a class or subclass

(biology) a taxonomic group containing one or more genera

(biology) a taxonomic group ranking below an order but above a family

(biology) a taxonomic category below a family

(biology) a taxonomic category between a genus and a subfamily

(biology) taxonomic group containing one or more species

(biology) taxonomic group between a genus and a species

(biology) a taxonomic group with a single member (a single species or genus)

(biology) taxonomic group whose members can interbreed

(biology) a taxonomic group that is a division of a species; usually arises as a consequence of geographical isolation within a species

(biology) a group of organisms within a species that differ in trivial ways from similar groups

(biology) the taxonomic group whose characteristics are used to define the next higher taxon

a group of animals (a herd or flock) moving together

an artificial taxonomic category for organisms of which the true relationships are obscure

all future generations

the larger than expected generation in United States born shortly after World War II

the generation following the baby boom (especially Americans and Canadians born in the 1960s and 1970s)

the offspring at one birth of a multiparous mammal

used in some classification systems: a group of extinct fossil gymnosperms coextensive with the order Cycadofilicales

used in former classification systems; approximately synonymous with order Caryophyllales

used in some classification systems for plants that bear catkins

a large and probably unnatural group of fungi and funguslike organisms comprising the Mastigomycota (including the Oomycetes) and Zygomycota subdivisions of the division Eumycota; a category not used in all systems