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AnnelidaThe Segmented Worm
Taxonomy● Domain- Eukarya● Kingdom- Animalia● Phylum- ANNELIDA● Class ● Order● Family● Genus● Species
Quick Glance at Phylum Annelida
Examples:● Leeches● Earthworms● Tube Worms
*Note: The Alaskan Bull Worm is not a real Annelid
Quick Facts● Body Symmetry: Bilateral symmetry● Reproduction: Sexual ● Movement: Muscular contractions● Food: Some are carnivores (leeches may suck
blood), some are herbivores, and some are scavengers- all have a one way digestive system
The Giant Earthworm
https://www.youtube.com/watch?v=NhsH2okFNGU
“Little Rings”● Phylum Annelida has segmented worms
meaning the worm’s body has small divisions, or rings.
● The worm also has small hairs called SETAE all over the body that helps them move.
Why are worms so slimy???● Worms have mucous on the outside of their
body. But why?○ IT HELPS THEM MOVE THROUGH DIRT
AND ABSORB OXYGEN THROUGH THEIR BODY.
Why do we need Annelids?● Annelids help our soil! How do they do it?
○ BREAK DOWN ORGANIC MATTER (THROUGH EATING)
○ MAKE TUNNELS WHICH BRINGS IN AIR○ MOVE NUTRIENTS AROUND IN SOIL
Annelids as predatorshttps://www.youtube.com/watch?v=rPvyVPFSsAU
Fun Facts● Doctors have used leeches for years to help suck
blood from wounds and help heal those wounds faster!
● When you cut an earthworm, the part that has the clitellum will survive!
● The largest earthworm found measured 22 FEET long!
● Earthworm poop, or CASTS, mix with soil to help make it better!
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