Kingdom Animalia Phylum Annelida (segmented worms) https://www.youtube.com/watch?v=9Q9gh1k99rY

Main Characteristics segmented worms true coelom (body cavity)

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.

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

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

- sexual reproduction in annelids - some are hermaphrodites

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

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)

https://www.youtube.com/watch?v=ZG4e3uik9uw

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) 

Leeches being bred for medical uses.

What would you do to cure a swollen foot?

https://www.youtube.com/watch?v=XtpERpBDJtU

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

Nereis

Featherduster

Fireworm

https://www.youtube.com/watch?v=cdr1kWmSiiE

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