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Animal Phylum: Platyhelminthes

Animal Phylum: Platyhelminthes. Flatworms are better than puppies Some Interesting Info…. There are over ____________ species of flatworms. Live in __________________________, and damp terrestrial environments!

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Animal Phylum: Platyhelminthes

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  1. Animal Phylum: Platyhelminthes

  2. Flatworms are better than puppiesSome Interesting Info… • There are over ____________ species of flatworms. • Live in __________________________, and damp terrestrial environments! • They range in size from nearly microscopic free-living species to certain tapeworms over ______ meters (______________) long! • Approximately, _______________of the world’s human population is infected with parasitic worms!!

  3. 3 Classes of Flatworms • Turbelaria • _____________________ flatworms • Ex: Planaria • ________________ • Endoparasites • Ex: Tapeworms • __________________ • Endoparasites • Ex: Liver flukes & blood flukes

  4. Phylum Platyhelminthes • 2 General Categories • Free living • Live ________________________ • Parasitic • Needs a _____________________

  5. Symmetry • Bilateral Symmetry • Body can be divided into _____________but opposite halves • Cephalization • One end functions as the ____________containing the ______________and _____________

  6. Tissues, Organs, and Systems • 3 distinct tissue layers  1st phylum to have this! • Epidermis = _________________ • Endodermis = __________________ • Mesoderm = _____________________ • These cells become ______________________.

  7. Tissues, Organs, and Systems (Cont.) • Digestive System • Only ________opening • Excretory System • Rids body of excess water with ______________________

  8. Tissues, Organs, and Systems (Cont.) • Movement • Move by _____________ and elongated muscle cells in mesoderm • Nervous System • Nerve cords _____________________________

  9. Tissues, Organs, and Systems (Cont.) • Reproductive System • _________________________ • Gas Exchange • Take in oxygen by ______________

  10. Important Systems in Planaria Flame Cell Eyespot Ovary Ganglia Testis GVC Pharnyx Reproductive System Digestive System Excretory System Nervous System

  11. Life Cycle of Blood Fluke

  12. Tapeworms • ___________with __________and ___________to hold itself inside the gut. • No digestive system! • Absorbs host’s digested food through ________

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