Question

make a list of other animal in the Phylum annelida

Answer 1

The Phylum Annelida



Etymology:- From the Latin Annellus a little ring.

Characteristics of Annelida:-
1)Bilaterally symmetrical and vermiform.
2)Body has more than two cell layers, tissues and organs.
3)Body cavity is a true coelom, often divided by internal septa.
4)Body possesses a through gut with mouth and anus.
5)Body possesses 3 separate sections, a prosomium, a trunk and a pygidium.
6)Has a nervous system with an anterior nerve ring, ganglia and a ventral nerve chord.
7)Has a true closed circulatory system.
8)Has no true respiratory organs.
9)Reproduction normally sexual and gonochoristic or hermaphoditic.
10)Feed a wide range of material.
11)Live in most environments.





The disribution and populations of most Annelids is not well known, however the 2000 IUCN Redlist includes two species under its critically endangered caregory,

1 Mesonerilla prospera
2 Phallodrilus macmasterae

and four species in its vulnerable category,

1 Driloleirus americanus WASHINGTON GIANT EARTHWORM
2 Driloleirus macelfreshi OREGON GIANT EARTHWORM
3 Komarekiona eatoni EARTHWORM
4 Megascolides australis GIANT GIPPSLAND EARTHWORM









Annelid Classification

Class Subclass Order
Polychaeta Orbiniida
Ctenodrilida
Psammodrilida
Cossurida
Spionida
Questida
Capitellida
Ophelliida
Phyllodocida
Amphinomida
Spintherida
Eunicida
Sternaspida
Oweniida
Flabelligerida
Poeobida
Terebellida
Sabellida
Nerillida
Dinophilida
Polygordiida
Protodrilida
Myzostomida
Aelosomata Aelosomata
Clitellata Oligochaeta Lumbriculida
Moniligastrida
Haplotaxida
Branchiobdella Branchiobdella
Hirudinae Acanthobdellida
Rhynchobdellida
Arhynchobdellida




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