Diversity in Living Organisms


   
 
Phylum Annelida (Segmented Worms)
Features of Annelida
 
 
Occur in moist soil, fresh water and sea
 
Body is soft and segmented, triploblastic with bilateral symmetry
 
First animal with the coelom (body cavity)
 
Body is covered by a non-chintinous cuticle which may have chitinous setae, or parapodia
 
Reproduction is generally sexual, but some may reproduce asexually by rejuvination i.e, by regrowing broken segments
 
Example: Nereis (sand worm), Aphrodite (sea mouse), Pheretima (earthworm), Hirudinaria (leech)
 
  
     
   
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