Annelids BY: BRANDON, JOSH, MARY, REILLY

AnnelidsBY: BRANDON, JOSH, MARY, REILLY

http://upload.wikimedia.org/wikipedia/commons/c/ca/Oligochaete_GLERL_1.jpg

What type of symmetry do Annelids have?

Bilateral symmetrical

"Annelida - Segmented Worms." Annelida. N.p., n.d. Web. 02 Oct. 2014.

http://www.robinsonlibrary.com/science/zoology/annelids/earthworm.htm

How do Annelids move?

Segmented body2 sets of muscles

Longitudinal- expandsCircular- contracts

"Annelida - Segmented Worms." Annelida. N.p., n.d. Web. 02 Oct. 2014.

http://www.robinsonlibrary.com/science/zoology/annelids/earthworm.htm

Nervous System

Primitive brainRing of nerves to ventral chordLateral nerves and gangliaSense organs

"Annelida." The Columbia Encyclopedia, 6th Ed.. 2014, Jennifer Yeh, "Annelida." A Dictionary of Biology. 2004, Michael Allaby, and AILSA ALLABY;MICHAEL ALLABY. "Annelida." Encyclopedia.com. HighBeam Research, 01 Jan. 2014. Web. 02 Oct. 2014.

Reish, Donald J. "Annelid (invertebrate)." Encyclopedia Britannica Online. Encyclopedia Britannica, n.d. Web. 01 Oct. 2014.

http://en.wikipedia.org/wiki/Evolution_of_nervous_systems

Digestive System

Two wayUnsegmented gutMouth to endSeparated by coelom



https://yhsbiology.wikispaces.com/Annelida+Videos

Excretory System

ProtonephridaTubules end in cell

Flagella and common ductMetanephridiaExcrete ammonia products



http://osmoregulationapbio3.wikispaces.com/file/view/44_10Protonephridia_L.jpg/212064230/480x202/44_10Protonephridia_L.jpg

http://bcs.whfreeman.com/thelifewire/content/chp51/images/IQ5105.gif

Circulatory System

Closed, through diffusionHemoglobin (red/green)Through head (contractile vessels)Rest of body (lateral vessels)Contractile act as heart



http://earthwormsinfo.com/wp-content/uploads/2011/08/wormbiology.jpg

Respiratory System

Through skin or gill filamentsDiffusion

Oxygen carriedHemoglobin or chlorocruorin



http://myclasses.naperville203.org/staff/NNHSBiology/KraftsonEco/Animal%20Kingdom%20%20Period%202%20Picture%20Library/Annelida/annelida.bmp

Support/Skeletal System

CoelomLiquid filled“Inflates” annelid



http://www.anselm.edu/homepage/jpitocch/genbi101/18_03bTrueCoelom-L%20copy.jpg

Reproductive System

SexualSome hermaphroditesMost- separate genders



http://www.robinsonlibrary.com/science/zoology/annelids/graphics/earthworm3.gif

Oligochaeta (few bristles)

Specialized derived worms About 3000 species Less than 10 families Mostly small and inconspicuous Few large and terrestrial (earthworms)

http://upload.wikimedia.org/wikipedia/commons/c/ca/Oligochaete_GLERL_1.jpg

Hansen, Armauer. Annelida = Annelida. Christiana: Grøndahl, 1882. Print.

Oligochaeta (continued)

Inhabit moist environments Homogenous class

http://classconnection.s3.amazonaws.com/613/flashcards/884613/jpg/earthw11320351359586.jpg


Polychaeta (many bristles)

Almost entirely marine Important for benthic communities Very diverse, heterogeneous About 8000 species 80 families

http://www.bio.miami.edu/dana/pix/polychaete1.jpg


Polychaeta (continued)

Burrowers, tube dwelling, free living, and mobile At least one pair of sensory appendages Body wall is extended laterally (parapodia)

https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcSdUve23jBFQrhfqhJ-PvoHHUxegh7fvo3eirDUzT_wYpLdC8sKVw


Hirudinea (leeches)

Derived from oligochaeta Homologenous taxon About 500 species Relatively large (up to 30 cm) Always with 34 segments

https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcSpDjwhc4l6hqPAmHBZTeRCkQ7-_nDIIRWH9JNZP-SkpHBvpAXnZg


Hirudinea (continued)

Originally freshwater Also marine and terrestrial Parasitic or predators

https://lh5.googleusercontent.com/-NodTi4TCS6U/TXj0HBxsYLI/AAAAAAAAADc/EryEpkwUZDA/s1600/1.jpg


Other Phylum Facts

AKA segmented worms Spilt in to sections

Living area Marine, Freshwater, and terrestrial

"Phylum Annelida." Iweb. Tntech, 9 Oct. 2010. Web. 1 Oct. 2014. <http%3A%2F%2Fcfcc.edu%2Ffaculty%2Frogers%2Fcourses%2Fmsc174%2FLectures%2FPhylum%2520Annelia>.

https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcRELdqAiBF_6jFpG4z2Rd8OuP1LerJaLLlIi8HG294tW8Y0LdDGRA

Hermaphrodites

Male sex organs Female sex organs Can’t self fertilize

"Phylum Annelida." Iweb. Tntech, 9 Oct. 2010. Web. 1 Oct. 2014. <http%3A%2F%2Fcfcc.edu%2Ffaculty%2Frogers%2Fcourses%2Fmsc174%2FLectures%2FPhylum%2520Annelia>.

https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcTjFGTH0acUK5r7YzFs-f9nokY_mzXnYwz3yjF-dZ-iMLTdeZxv2g

Clitellum

Raised band (Bandaid) Near head

14, 15, 16 segment Forms mucus around eggs

Cocoon

"Phylum Annelida." Iweb. Tntech, 9 Oct. 2010. Web. 1 Oct. 2014. <http%3A%2F%2Fcfcc.edu%2Ffaculty%2Frogers%2Fcourses%2Fmsc174%2FLectures%2FPhylum%2520Annelia>

https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcR-Pg6bmr9FSJMPSFEKffYkYAo9R4qh6aETAb5h05p1BTW7U4MbGw

Gizzard

Intestine

Segmental Ganglion

Segmental blood vessel

Ventral blood vessel

Crop

Mouth

Segmental nerves

Dorsal blood vessel

Clitellum

Female reproductive organs

Male Reproductive organs

Hearts

PharynxCentral Ganglia

Esophagus

https://yhsbiology.wikispaces.com/file/view/earthworm.gif/49088829/500x295/earthworm.gif

Polychaeta- Bristle worms

Polyphyletic class of annelid worms Each body segment has a pair of fleshy

protrusions called parapodia that have many bristles called chaetae

https://www.google.com/search?q=worms&es_sm=93&source=lnms&tbm=isch&sa=X&ei=kpUtVO3IN4TnoATTuIDgAw&ved=0CAgQ_AUoAQ&safe=active&ssui=on#safe=strict&tbm=isch&q=Bristle+worms

Hirudinea- Leech

Leeches are segmented worms that belong to the phylum annelid

Always have 34 segments Marine and land

https://www.google.com/search?q=worms&es_sm=93&source=lnms&tbm=isch&sa=X&ei=kpUtVO3IN4TnoATTuIDgAw&ved=0CAgQ_AUoAQ&safe=active&ssui=on#safe=strict&tbm=isch&q=Leech

Documents

Annelids BY: BRANDON, JOSH, MARY, REILLY