1. Nicole Fandel, Haley Fink, Zach White, Chris Johnson
Annelids
Nicole Fandel, Haley Fink,
Zach White, Chris Johnson

2. Annelid Symmetry
Bilaterally symmetrical
One plane of symmetry exists

3. Movement Body extension/contraction Parapodia Setae Muscles
Longitudinal
Circular

4. Nervous System
Ventral nerve cord
Clusters of nerves in segments

5. Digestive System One-way Runs length of body Crop Gizzard Stores food
Grinds food

6. Excretory System
Diffusion
Nephridia
Connects to duct

7. Circulatory System Moves blood, nutrients & O2 Two main blood vessels
Closed system
Five hearts

8. Respiratory System
Breathes through skin

9. Support/Skeletal System
Absent
Supportive muscles

10. Reproductive System
Hermaphroditic
Sexually reproduce 1. 3. 4. 2. 5.

11. Oligochaeta Few bristles Few species, largest amount individual worms
Soil or fresh water
Decomposers
Hermaphroditic
Aerates soil
Earthworm

12. Polychaeta Many bristles & parapodia Many species Marine
Sexual reproduction
Shore, surface of water, depths of ocean
Ex: bobbit worm, tube worm, bristle worm
Bobbit Worm
Sandworm

13. Hirudinea Flattened, predacious, parasitic Blood = Food source
Freshwater, ocean, moist soil
Avoid light
Hermaphroditic
Sexually reproduce
Ex: Leeches
Leeches

14. Other Annelid Facts Bodies divided into segments
Segments contain parts of body systems
Live in damp soil/marine habitats
Hermaphrodites
Male & female reproductive organs
Clitellum
Cocoon for eggs
Anterior
Clitellum

15. 5. 6. 7. 4.
11. 8. 3. 2.
14. 1. 9.
13.
10.
12.

16. Works Cited
Roundy, Lisa. "Annelids: Types & Structure | Study.com." Study.com. N.p., Web. 29 Sept <
"Annelida." Infoplease. Infoplease, Web. 29 Sept < hirudinea.html>.
"Class Hirudinea." Class Hirudinea. N.p., Web. 29 Sept <
Reish, Donald J. "Annelid." Encyclopedia Britannica Online. Encyclopedia Britannica, Web. 29 Sept <
"Annelida - Segmented Worms." New Hampshire Public Television. N.p., Web. 29 Sept <
"Earthworm." Encyclopedia Britannica. N.p., Web. 29 Sept <
"Annelida." Infoplease. Infoplease, Web. 29 Sept < characteristics.html>.

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