Platyhelminthes
Upcoming SlideShare
Loading in...5
×
 

Platyhelminthes

on

  • 4,169 views

 

Statistics

Views

Total Views
4,169
Views on SlideShare
4,151
Embed Views
18

Actions

Likes
0
Downloads
92
Comments
0

2 Embeds 18

http://www.slideshare.net 13
http://belgrademiddleschool.edu20.org 5

Accessibility

Categories

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

Platyhelminthes Platyhelminthes Presentation Transcript

  • Platyhelminthes Lauren Wagner and Madison Page 5-19-09 3 rd Period Tapeworm Hymenolepis diminuta Fluke Megaptera Novaeangliae
  • Classification
    • Trematoda- parasitic; 12,000 species; various suckers; infect 200 million people a year; 4 hosts.
    • Cestada- 3,500 species; parasitic; mouth no gut; live anywhere with vertebrates.
    • Turbellaria- aquatic; move with cilia; asexual reproduction (fission)
    • Mongenera- 1 host in life; endoparasitic; free swimming
  • Body
    • Bilateral symmetry.
    • Flattened
    • Ribboned shape
    • 3layers of body tissues with organs.
    • Blind gut- mouth no anus
    • The protonephndral excretory organs which replace the anus
    • No skeleton
    • Nervous system of longitudinal fibers
    • Unblinkable eyespots
  • Reproduction
    • Eggs pass out with the primary host's feces and eventually contaminate water, where they are ingested by snails (the first intermediate host).
    • Eggs burrow into the digestive system.
    • Sporocyst forms a redia asexually.
    • It then leaves the snail and finds a fish host. It then affects the fish.
    • Most species of flatworms reproduce either sexually or asexually
  • Digestive System
    • Flatworms absorb nutrients through their skin and excrete
    • wastes using specialized "flame cells."
    • There is only a mouth opening.
    • The mouth eliminates food.
  • Circulatory System
    • Transport oxygen, nutrients, and wastes through the body via a closed circulatory system.
    • Blood travels from the anterior to the posterior through a ventral blood vessel and then forward through a dorsal vessel.
    • Five pairs of tubes, the aortic arches, link the major vessels near the anterior.
    • Smaller vessels branch into each segment of the body.
    • Contractions of the ventral vessel force blood through the body.  
  • Respiratory System
    • Earthworms have no gills or other respiratory organs.
    • Oxygen and carbon dioxide diffuse directly across only moist skin.
    • (mucus and a thin cuticle also help keep the earthworm’s skin moist.)
  • Environment
    • Mainly found in aquatic areas.
    • Moist areas.
    • Marine, freshwater areas.
  • Human Interactions
    •   Over half of all known flatworm species are parasitic, Schistosomiasis, caused by Infection of humans by the broad fish tapeworm Diphyllobothrium latum occasionally causes vitamin B12 deficiency.
    • Platyhelminth parasites to humans with organic farming.
    • The popularity of raw or lightly-cooked foods, and imports of meat, sea food and salad vegetables from high-risk areas.
  • Unique Features
    • Can be 50 meters long.
    • Need symbiotic relationships to survive fatty acids.
    • Well developed nervous system.
  • Pictures
  • Bibliography
    • Google. May 19 th , 2009.
    • http://images.google.com/images?hl=en&q=platyhelminthes&gbv=2&aq=f&oq =
    • Platyhelminthes. May 19 th , 2009.
    • http:// zipcodezoo.com/Key/Animalia/Platyhelminthes_Phylum.asp
    • Platyhelminthes. May 19 th , 2009.
    • http://www.discoverlife.org/20/q?search=Platyhelminthes
    • Angelfire. May 19th, 2009.
    • http:// www.angelfire.com/ut/biocheat/PlatyhelminthesNemat.html
    • Platyhelminthes. May 19 th 2009.
    • http:// faculty.pnc.edu/jcamp/parasit/flatworm.html
    • Platyhelminthes. May 19 th , 2009.
    • http://cas.bellarmine.edu/tietjen/images/platyhelminthes.htm
    • Phylum Platyhelminthes. May19th, 2009.
    • http://io.uwinnipeg.ca/~simmons/lb6pg6.htm
    • Platyhelminthes. May 19 th , 2009.
    • http://www.bumblebee.org/invertebrates/PLATYHELMITHES.htm
    • Holt, Rinehart and Winston. Animals: Holt Science and Technology. Time Warning Company, 2000.
    • Tapeworms. May 21 st , 2009.
    • http://animals.jrank.org/pages/1532/Tapeworms-Cestoda.html
    • Trematoda. May 21 st , 2009.
    • http://www. answers.com/topic/trematoda
    • What Are Tapeworms. May 21 st , 2009.
    • http://www.wisegeek.com/what-are-flatworms.htm
    • May 21 st , 2009.
    • http://images.google.com/images?hl=en&um=1&sa=1&q=tapeworm&aq=f&oq=