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Class Polychaeta Notes
- 1. Phylum: AnnelidaPhylum: Annelida Class: PolychaetaClass: Polychaeta By Mr. “I have hair” ChapmanBy Mr. “I have hair” Chapman
- 2. Class: PolychaetaClass: Polychaeta PolyPoly – manymany ChaiteChaite – hairhair Many hair animalsMany hair animals
- 3. Class: PolychaetaClass: Polychaeta Live in a variety ofLive in a variety of habitatshabitats – Ocean floorOcean floor – Under rocks andUnder rocks and shellsshells – Crevices of coralCrevices of coral reefsreefs
- 4. Polychaeta DigestionPolychaeta Digestion Free swimming polychaetes areFree swimming polychaetes are predators, scavenger, and filterpredators, scavenger, and filter feeders.feeders.
- 6. AnnelidsAnnelids Earthworms and polychaetes haveEarthworms and polychaetes have appendages growing from each ofappendages growing from each of the annuli calledthe annuli called SetaeSetae
- 7. PolychaetesPolychaetes On someOn some polychaetes thepolychaetes the (setae) are longer(setae) are longer and are calledand are called parapodiaparapodia and areand are used as paddles.used as paddles. Parapodia are theirParapodia are their most distinctivemost distinctive featurefeature
- 8. PolychaetesPolychaetes Tube worms are an example of marineTube worms are an example of marine species that do not have paddle-likespecies that do not have paddle-like appendages.appendages.
- 9. PolychaetesPolychaetes Another example are Feather DustersAnother example are Feather Dusters
- 10. PolychaetesPolychaetes Another example are Christmas Tree WormsAnother example are Christmas Tree Worms
- 11. PolychaetesPolychaetes They burrow into the bottom asThey burrow into the bottom as larvae, but as they grow, they makelarvae, but as they grow, they make a tube, which serves as a burrow.a tube, which serves as a burrow.
- 12. PolychaetesPolychaetes However the tubeHowever the tube is above the seais above the sea floor.floor. They have setae toThey have setae to hold themselves inhold themselves in their tube.their tube.
- 14. Tube WormsTube Worms Tube is made ofTube is made of sand, gravel andsand, gravel and bits of shells thatbits of shells that stick to the worm’sstick to the worm’s slime. It allslime. It all becomes tough andbecomes tough and leathery.leathery.
- 15. Tube WormsTube Worms Feathery gillsFeathery gills surround thesurround the mouth.mouth. They form aThey form a funnel-shaped fanfunnel-shaped fan covered with ciliacovered with cilia called Radiolescalled Radioles
- 16. Tube WormsTube Worms This creates aThis creates a feeding currentfeeding current that draws in food.that draws in food. Food is anythingFood is anything that is organic andthat is organic and digestable.digestable.