Worms
By: Tahj Robinson
Annelids
- All Annelida are bilateral in symmetry
- Coelom
- Has a fluid cavity between the outer body wall
- 6 major sensory structures
- Ex: Leaches
Nematoda
- Complete Digestive System
- Cuticle- a coating used for protection
- Also considered as roundworms
- Are classified as Pseudocoelom
Platyhelminthes (Flatworms)
- Very popular species consisting of 20,000+
- Bilateral in symmetry & are soft bodied
- 4 classes - Free-living, primary aquatic class, Turbellaria, and Trematoda
- Some are parasites in which they rely on a host by hooking on to a human intestine and collecting blood. Can't live without this.