please explain the phylum aschehelminthes and and its general features

Phylum Aschelminthes

Another name for Aschelminthes is nematoda or ‘roundworms’. 

General features of Aschelminthes

• They are parasitic animals which cause diseases such as elephantiasis (filarial worms) and usually live in the intestine.
• A nematode has a cylindrical body with tapering ends.
• Nematodes have an organ system level of organization, but less real organs are formed due to the absence of a true coelom.
• They are bilaterally symmetrical and triploblastic.
• A false body cavity or pseudocoelom is present.
• Examples of nematodes:Ascaris, Wuchereria (filarial worm), Ancylostoma (hookworm)