Download presentation
Presentation is loading. Please wait.
1
KINGDOM ANIMALIA Phylum Platyhelminthes
2
Phylum Platyhelminthes
Members of the four classes of the phylum are known as the “flatworms.”
3
Members of the Phylum Platyhelminthes
…are bilaterally symmetrical. …are acoelomates with only one internal space. …have an organ-system level of organization …are hemaphroditic. …range in size from 1-2 mm to several meters.
4
Four Important Platyhelminthes Classes
1. Class Turbellaria Mostly free-living flatworms Either carnivores or scavengers Example: Dugesia
5
Four Important Platyhelminthes Classes
2. Class Monogenea Typically found as parasites on fish Single generation in life cycles Example: Gyrodactylus
6
Four Important Platyhelminthes Classes
3. Class Trematoda All parasitic flukes Most are internal parasites of vertebrates with complex life cycles Example: Schistosoma
8
Four Important Platyhelminthes Classes
4. Class Cestoda Most are internal parasites living in the gastrointestinal tracts of vertebrates No digestive system Tapeworms-“the ultimate parasites”
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.