Platyhelminthes - PowerPoint PPT Presentation

platyhelminthes n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Platyhelminthes PowerPoint Presentation
Download Presentation
Platyhelminthes

play fullscreen
1 / 14
Platyhelminthes
696 Views
Download Presentation
arleen
Download Presentation

Platyhelminthes

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Platyhelminthes <http://clean-water.uwex.edu/pubs/clipart/critters.plan.htm> Quick Quiz: How long are the longest flatworms? Eugene Lee, Hyun Seok Lee

  2. What Are Platyhelminthes? • Named because their bodies are thin between the dorsal and ventral surfaces • Platyhelminth Eugene Lee

  3. Sample Animal: Blood Fluke • Blood Fluke (Schistosoma Mansoni) • Trematoda • Schistosomiasis, a disease whose symptoms include pain, anemia, and dysentery. <http://georgiafaces.caes.uga.edu/graphicsfiles/LandPlanarian33hr.jpg> Eugene Lee

  4. Sample Animal: Pseudoceros dimidiatus • Turbellaria • Yello/Black Stripes with Orange Edge • Found in Indo-Pacific, Red Sea <http://www.waterworxbali.com/Images/Photos/Large/pseudoceros-dimidiatus.jpg> Eugene Lee

  5. 4 Classes of Platyhelminthes • Turbellaria • Monogenea • Trematoda • Cestoda Schistosoma(Blood flukes) <http://img2.scoop.co.nz/stories/images/0304/eec6749f6646c81b6298.jpeg> Hyun Seok Lee

  6. Body Symmetry/Cavity None. No Skeletal System! Callioplana marginata Eugene Lee <http://www.daveharasti.com/nelsonbay/seaslugs/flatworms/callioplana_marginata.jpg>

  7. Locomotion/Musculature • Uses Cilia on their ventral epidermis • Some other turbelarians use their muscles Hyun Seok Lee

  8. Nervous System • Eyespots (Sensory Structure) • Ventral Nerve Cords • Ganglia <http://kdhellner.tripod.com/id17.html> Eugene Lee

  9. Excretory/Digestive System • Simple excretory apparatus • A combination digestive/excretory system Mouth Hyun Seok Lee <http://kdhellner.tripod.com/id17.html>

  10. Circulatory System • Gastrovascular cavity • Eats small worms, insects, and microscopic matter Eugene Lee

  11. Reproduction • Hermaphroditic <http://highered.mcgraw-hill.com/sites/dl/free/0078664276/281029/ccq_ch12_q4a.gif> Hyun Seok Lee

  12. Gas Exchange • Diffusion <http://1.bp.blogspot.com/_8S5FnilQeWM/R02wga5Iy0I/AAAAAAAAAA8/CGecy2kqb9Q/s320/48842.jpg> Hyun Seok Lee

  13. Quiz • What processes are occurring during gas exchange and excretory system? • How do flatworms reproduce? Through what process? • How do flatworms carry out excretory and digestive system? • Name 4 classes of Platyhelminthes Hyun Seok Lee, Eugene Lee

  14. Answers: • Diffusion • Asexually • Through pharynx/Vastrovascular cavity • Turbellaria, Monogenea, Tremattoda, Cestoda Hyun Seok Lee, Eugene Lee