1. Platyhelminthes Emily Anderson Kelsey Crawford Emily Spillett Angela Spinney

2. Kingdom: Animalia Phylum: Platyhelminthes Class: -Cestoda -Monogenea -Trematoda -Turbellaria Classification

3. Monogenea  Parasitic  Ectoparasites and Endoparasites

4. Cestoda  Tapeworms  Lack digestive system and locomotor organs  Host intestines

5.  Commonly called flukes  18,000 to 24,000 species  Parasites of mullosks and vertebrates  Range from 1mm-7cm in size  Have two distinct suckers; on mouth and underside. Trematoda

6.  Commonly called Planarian  Live in saltwater and freshwater ponds and rivers  Receive oxygen and release carbon dioxide through diffusion  Eat small living or dead animals through their muscular mouths. Turbellaria

7.  Two basic forms of movement  Simple Nervous System  Flat bodied  Unsegmented bodied  Bilateral symmetry  Take in food and get rid of waste through mouth  Invertebrates Characteristics

8.  Free-living Forms  Parasitic Forms  Example: Monogenea Development/Life Cycle

9.  Sexual Reproduction  Asexual Reproduction Transverse Fission Budding Reproduction

10. Evolutionary History  Evolved from Hydra  550 million years ago  Bilateral Symmetry

11.  The longest tape worm ever found was over 90 feet long  If a flatworm is starved it is capable of shrinking to hatching size and when fed it has the ability to grow back to its original size Fun Facts !

12.  Some species switch from being a herbivore to a carnivore as they mature.  Scientists can train flatworms to do simple tasks, such as finding water in a maze. When these flatworms are then cut in half, the new halves learn faster than the original. Fun Facts Cont.

13. - http://www.biologycorner.co/ Fbio1notes_flatworms.html http://faculty.fmcc.suny.edu/mcdarby/Animals/PlantsBook/ Animals/03-Flatworms.html -http://www.britannica.com/EBchecked/topic/209735/flat worm/64445/Developmenthttp://www.britannica.com/EBchecked/topic/209735/flat worm/64445/Development -http://www.earthlife.net/inverts/platyhelminthes.htmlhttp://www.earthlife.net/inverts/platyhelminthes.html -http://science.kennesaw.edu/~jdirnber/InvertZo/LecPlaty hel/Platyhel.htmlhttp://science.kennesaw.edu/~jdirnber/InvertZo/LecPlaty hel/Platyhel.html -http://www.seawater.no/fauna.platyhelminthes/&h=_AQ E7P9Tmhttp://www.seawater.no/fauna.platyhelminthes/&h=_AQ E7P9Tm -http://www.ecospark.ca/changingcurrents/flatwormhttp://www.ecospark.ca/changingcurrents/flatworm Sources