1. Kingdom Animalia Phylum Annelida
(segmented worms)

2. Main Characteristics
segmented worms true coelom (body cavity)

3. Annelids Include: earthworms marine worms leeches
This is a scale worm (Polychaetes). They live 1000 meters below the water’s surface and can turn their mouths inside out.

4. Other Traits - Annelida means “little rings”
- body segments separated by septum
= internal wall

5. -some have bristles called setae
-have closed circulatory system
-have well-developed nervous system (brain)

6. - sexual reproduction in annelids
- some are hermaphrodites

8. Streamlined bodies for moving through soil
Class Oligochaeta – Earthworm
Streamlined bodies for moving through soil
Few setae, allows for gripping soil
Live in soil or fresh water

10. As earthworms pass food & soil through intestines, nutrients are absorbed and indigestible matter passes out through anus as castings
Castings - enrich soil, earthworms aerate soil (worm poop)

13. Class Hirudinea - suck blood & body fluids from host tropical habitats
-Leeches
-external parasites with suckers on each end
- suck blood & body fluids from host
-most live in moist
tropical habitats
-medicinal uses (circulation, anti-clotting) 

15. Leeches being bred for medical uses.

16. What would you do to cure a swollen foot?

18. Class Polychaeta -includes: sandworms, bloodworms, fireworms
Marine worms
-includes: sandworms, bloodworms, fireworms
-have paired paddle-like appendages with setae

19. Nereis

20. Featherduster

21. Fireworm

24. Recap: Taxonomy
Kingdom Animalia
Phylum Annelida
Class Oligochaeta (earthworms)
Class Hirudinea (leeches)
Class Polychaeta (marine worms)
*All are segmented, and have a coelom