Phylogeny Table: Please read and follow the instructions below the table. you may refer to figure 32.3, tables 32.2 and 32.7) Tissue symmetry cavity Digestive segmentation blastopore system Porifera Cnidarian Platyhelmintes Nematoda Mollusca Arthropoda Annelids Echinodermata Chordata Tissue: Fill in as no tissue, two tissue layers or three tissue layers Symmetry: Fill in as none, radial or bilateral Cavity: Fill in as none, acoelomate, pseudocoelomate or coelomate Digestive system: Fill in as incomplete or complete Segmentation: Fill in a segmented or unsegmented Blastopore: fill in as none, Protostome or deuterostome