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By: Kiraleah Page Fendell Aaron Rene. Platy helminthes. Defining Characteristics and Example Organisms. Characteristics- Flattened organisms No digestive tract Gastro vascular cavity They have bilateral symmetry and three germ layers These organisms have a sac digestive system
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By: Kiraleah Page Fendell Aaron Rene Platy helminthes
Defining Characteristics and Example Organisms • Characteristics- • Flattened organisms • No digestive tract • Gastro vascular cavity • They have bilateral symmetry and three germ layers • These organisms have a sac digestive system • their food and waste go in and out of the same opening • Examples: Tape Worm Planaria
Defining Characteristics • Hydrostatic skeleton • Un- segmented bodies • Clever way to remember: • A single sac that is flat as a mat (Words of Alex Porte)