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PHYLUM ANNELIDA

SEGMENTED WORMS. PHYLUM ANNELIDA. Don’t try this at home! . many bristles. CHARACTERISTICS :. SEGMENTED BODY. BILATERAL SYMMETRY. MANY WELL DEVELOPED SYSTEMS. RAPTORIAL FEEDERS: ex: CLAMWORM & BLOODWORM. Blood worms have 4 jaws.

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PHYLUM ANNELIDA

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  1. SEGMENTED WORMS PHYLUM ANNELIDA

  2. Don’t try this at home!

  3. many bristles CHARACTERISTICS: • SEGMENTED BODY • BILATERAL SYMMETRY • MANY WELL DEVELOPED SYSTEMS

  4. RAPTORIAL FEEDERS: ex: CLAMWORM & BLOODWORM Blood worms have 4 jaws RAPTORIAL FEEDERS: HAVE HOOK-LIKE JAWS HELD INSIDE THE BODY WHICH STRIKE OUT TO GRAB PREY. FOOD IS THEN PULLED BACK INSIDE OF THE BODY & DIGESTED.

  5. CLAM WORM - RAPTORIAL FEEDER TENTACLES sense of touch, taste/smell SEPTA walls separate segments JAWSgrasp prey PHARYNX pushed out to feed PARAPODIA act as gills (absorb oxygen) & used to crawl & dig

  6. PARAPODIA

  7. CLAMWORM

  8. BLOODWORM

  9. BRISTLE WORM

  10. FIRE WORM – immature

  11. FIRE WORM – mature

  12. SUSPENSION FEEDERS • FILTERFEEDERS • FOOD IS TRAPPED BY FEATHERY TENTACLES & BROUGHT TO THE MOUTH • LIVE IN TUBES THEY CREATE (SAND, CALCIUM) • EXAMPLES: FAN WORM FEATHER DUSTER WORM

  13. SUSPENSION FEEDERS TENTACLES MOUTH TUBE

  14. FEATHER DUSTER WORM

  15. FEATHER DUSTER WORM TUBE

  16. AFTER BEFORE

  17. Yellow Feather Duster Worm

  18. BANDED FEATHER DUSTERS

  19. RED TUBE WORMS

  20. FEATHER DUSTER

  21. SLIME FEATHER DUSTER

  22. CHRISTMAS TREE WORMS

  23. SPIRAL TUBE WORMS

  24. CALCIUM WORM TUBES

  25. SPIRAL WORM SHELL

  26. DEPOSIT FEEDERS • USE STICKY TENTACLES TO FIND FOOD ON THE SURFACE OF SEDIMENT • LIVE IN BURROWS IN SAND/MUD GILLS

  27. SPAGHETTI WORM

  28. SPAGHETTI WORM

  29. CROSS-SECTION DORSAL BLOOD VESSEL CLOSED SYSTEM! MUSCLES REPRODUCTIVE CELLS INTESTINE PARAPODIA SETA / CHAETES SPINES VENTRAL NERVE CORD NEPHRIDIA VENTRAL BLOOD VESSEL

  30. FUNCTIONS OF ORGANS/SYSTEMS INTESTINE – ABSORB NUTRIENTS MUSCLES – CAUSE MOVEMENT BLOOD VESSELS – CARRY BLOOD PARAPODIA – CRAWLING/DIGGING NERVE CORD – CARRIES MESSAGES TO/FROM THE BRAIN NEPHRIDIA– EXCRETE URINE SETA/SPINES – HELP MOVE INCREASE TRACTION

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