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Annelida

BIOL2204 Annelida

QuestionAnswer
Key features segmented, coelomate, parapodia (legs), chaetae (bristles made from chitin), muscular body and complete gut
Draw and label an anterior diagram of a Polychaeta (bristle worm) Good job! (chaetae, peristomium, prostomium, palp, lateral antenna, tentacular cirri)
O. Sipunculida Peanut worm unsegmented, retractile eversible introvert, bears the mouth anterior anus (U-shaped gut)
Sub C. Echiura spoon worm unsegmented, no parapodia, coelomate, non-retractile proboscis, posterior anus, burrowers
C. Polychaeta (phylum Annelida) bristle worm segmented, chaetae and parapodia, distinct head
Polychaete intestine CS label order gut cavity, gut lining (endoderm), coelom, blood vessel, ventral nerve cord, longitudinal muscle, cuticle
Created by: mishm
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