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Oligochaeta

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WordNet (r) 3.0 (2006) (WordNet)

Oligochaeta
n 1: earthworms [synonym: {Oligochaeta}, {class Oligochaeta}]

The Collaborative International Dictionary of English v.0.48 (gcide)

Oligochaeta \Ol`i*go*chae"ta\, Oligochaeta \Ol`i*go*chae"ta\,
prop. n. pl. [NL., fr. Gr. 'oli`gos little, pl., few ?
hair.] (Zool.)
An order of Annelida which includes the earthworms and
related species, including some small freshwater species.
[1913 Webster PJC]

Annelida \An*nel"i*da\, n. pl. [NL. See {Annelid}.] (Zool.)
A division of the Articulata, having the body formed of
numerous rings or annular segments, and without jointed legs.
The principal subdivisions are the {Ch[ae]topoda}, including
the {Oligoch[ae]ta} or earthworms and {Polych[ae]ta} or
marine worms; and the {Hirudinea} or leeches. See
{Ch[ae]topoda}.
[1913 Webster]

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Oligochaeta - Wikipedia
With around 10,000 known species, the Oligochaeta make up about half of the phylum Annelida These worms usually have few setae (chaetae) or "bristles" on their outer body surfaces, and lack parapodia, unlike polychaeta
Oligochaete | Earthworms, Soil, Ecology | Britannica
Oligochaete, any worm of the subclass Oligochaeta (class Clitellata, phylum Annelida) About 3,500 living species are known, the most familiar of which is the earthworm (q v ), Lumbricus terrestris Oligochaetes are common all over the world They live in the sea, in fresh water, and in moist soil
Why Are Earthworms Classified as Oligochaeta? - ScienceInsights
Earthworms belong to Oligochaeta because of their few bristles and unique clitellum, but modern science has quietly reshaped how we define this group
Oligochaeta: Anatomy Reproduction | Earth Life
The Oligochaeta are the second largest group of the Annelida With 3,100 known species, they make up about one third of the phylum Within this diversity of species there are aquatic forms – both freshwater and marine – and also many terrestrial species
Oligochaeta - an overview | ScienceDirect Topics
Oligochaeta is a paraphyletic stem group (traditionally treated as a subclass) of the class Clitellata that is separate from the advanced, sucker-bearing clitellates: Hirudinea, Acanthobdellida, and Branchiobdellida
An Introduction to Class Oligochaeta - EazyBio
Oligochaeta are a subclass of segmented worms that are characterized by having few or no bristles on their outer body surfaces They are hermaphrodites, meaning they have both male and female reproductive organs
Oligochaetes: characteristics, nutrition, reproduction, habitat . . .
Oligochaeta are terrestrial worms belonging to the class Oligochaeta, which is part of the phylum Annelida They are known for distinct characteristics that differentiate them from other types of worms
Oligochaeta Definition, Characteristics Classification - Study. com
Explore oligochaeta Learn the definition of oligochaeta and understand its characteristics Find the classification of oligochaetes and see where they are found
Aquatic Earthworm (Oligochaeta) — EcoSpark
Learn about the aquatic earthworm (Oligochaeta spp ) benthic macroinvertebrate by exploring the life cycle, feeding habitats, interesting facts and its role in the food chain
Oligochaeta Definition - General Biology I Key Term |. . .
Oligochaeta is a class of annelid worms, including earthworms and freshwater worms, characterized by their segmented bodies and the presence of setae, or bristles, that aid in locomotion

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