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Transcript 
Annelids
NICOLE FANDEL, HALEY FINK,
ZACH WHITE, CHRIS JOHNSON
Annelid Symmetry
•Bilaterally symmetrical
•One plane of symmetry exists
Movement
•Body extension/contraction
•Parapodia
•Setae
•Muscles
• Longitudinal
• Circular
Nervous System
•Ventral nerve cord
•Clusters of nerves in segments
Digestive System
•One-way
•Runs length of body
•Crop
• Stores food
•Gizzard
• Grinds food
Excretory System
•Diffusion
•Nephridia
• Connects to duct
Circulatory System
•Moves blood, nutrients & O2
•Two main blood vessels
•Closed system
•Five hearts
Respiratory System
•Breathes through skin
Support/Skeletal System
•Absent
•Supportive muscles
Reproductive System
•Hermaphroditic
•Sexually reproduce
1.
3.
4.
2.
5.
Oligochaeta
•Few bristles
•Few species, largest amount individual worms
•Soil or fresh water
•Decomposers
•Hermaphroditic
•Aerates soil
Earthworm
Polychaeta
•Many bristles & parapodia
•Many species
•Marine
Bobbit Worm
•Sexual reproduction
•Shore, surface of water, depths of ocean
•Ex: bobbit worm, tube worm, bristle worm
Sandworm
Hirudinea
•Flattened, predacious, parasitic
•Blood = Food source
•Freshwater, ocean, moist soil
•Avoid light
•Hermaphroditic
• Sexually reproduce
•Ex: Leeches
Leeches
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
5.
6.
7.
11.
4.
8.
3.
2.
14.
1.
13.
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9.
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Works Cited
Roundy, Lisa. "Annelids: Types & Structure | Study.com." Study.com. N.p., 2016. Web. 29 Sept. 2016.
<http://study.com/academy/lesson/annelids-types-structure.html>.
"Annelida." Infoplease. Infoplease, 2012. Web. 29 Sept. 2016. <http://www.infoplease.com/encyclopedia/science/annelida-class-
hirudinea.html>.
"Class Hirudinea." Class Hirudinea. N.p., 2013. Web. 29 Sept. 2016. <http://lakes.chebucto.org/ZOOBENTH/BENTHOS/xxvi.html>.
Reish, Donald J. "Annelid." Encyclopedia Britannica Online. Encyclopedia Britannica, 2016. Web. 29 Sept. 2016.
<https://www.britannica.com/animal/annelid>.
"Annelida - Segmented Worms." New Hampshire Public Television. N.p., 2016. Web. 29 Sept. 2016.
<http://www.nhptv.org/wild//annelida.asp>.
"Earthworm." Encyclopedia Britannica. N.p., 2016. Web. 29 Sept. 2016. <https://www.britannica.com/animal/earthworm#ref131542>.
"Annelida." Infoplease. Infoplease, 2012. Web. 29 Sept. 2016. <http://www.infoplease.com/encyclopedia/science/annelida-annelid-
characteristics.html>.
Photography Cited
© 2016 homeschooldebate.com
© 2016 http://incolors.club/collectionadwn-ascaris-anatomy-diagram.htm
© 2016 https://www.sciencedaily.com/releases/2015/04/150407085035.htm
© 2016 http://www.dailytelegraph.com.au/newslocal/northern-beaches/how-to-extract-a-leech-bloodsuckersare-out-in-force-as-warm-wet-weather-creates-paradise-for-parasites/newsstory/cf9729041a32d2d3e2e1352590321e02
© 2016 http://charityowl.com/meet-your-new-nightmare-the-bobbit-worm/
© 2016 https://www.ncsu.edu/project/bio402_315/Annelids/annelid.html
© 2016 https://www.ncsu.edu/project/bio402_315/Annelids/annelid.html
© 2016 https://www.pinterest.com/pin/82753711877555560/
© 2016 Zach White
© 2016 Zach White
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