Annelida Lectures PDF
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These lecture notes cover the Phylum Annelida, discussing phylogenetic trees, body form comparisons, organization, and various characteristics.
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Phylogenetic tree of Bilateria showing major clades reorganization Body form: Phylum Platyhelminthes vs. Annelida Both bilaterally symmetrical and triploblastic (3 germ layers). Platyhelminthes no internal body cavity Annelids are the first group to develop a true coel...
Phylogenetic tree of Bilateria showing major clades reorganization Body form: Phylum Platyhelminthes vs. Annelida Both bilaterally symmetrical and triploblastic (3 germ layers). Platyhelminthes no internal body cavity Annelids are the first group to develop a true coelom (body cavity) located in the space between the body wall & gut wall Elongated wormlike (tube within-a-tube design). Allowed for development of complex organs with muscles Phylum Annelida 20,000 species,
