FLATWORMS, ROUNDWORMS, AND SEGMENTED WORMS Worms (Lexy Bishop, Kellie Black, and Violet Lawson)
PHYLUM ANNELIDA SEGMENTED WORMS...SEGMENTED WORMS Don’t try this at home! many bristles •...
Transcript of PHYLUM ANNELIDA SEGMENTED WORMS...SEGMENTED WORMS Don’t try this at home! many bristles •...
RAPTORIAL FEEDERS:
ex: CLAMWORM & BLOODWORM
Jaws protrude out
of the body!
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.
Bloodworms
have 4 jaws!
CLAM WORM - RAPTORIAL FEEDER
SEPTA
walls
separate
segments
PARAPODIA
act as gills (absorb oxygen)
& used to crawl & dig
TENTACLES
sense of touch,
taste/smell
PHARYNX
pushed out
to feed
2 JAWS
grasp prey
50 sec
SUSPENSION FEEDERS
• FILTER FEEDERS
• FOOD IS TRAPPED BY
FEATHERY TENTACLES
& BROUGHT TO THE
MOUTH
• LIVE IN TUBES THEY
CREATE (SAND, CALCIUM)
• EXAMPLES:
FAN WORM
FEATHER DUSTER WORM
DEPOSIT FEEDERS
• USE STICKY TENTACLES
TO FIND FOOD ON THE
SURFACE OF SEDIMENT
• LIVE IN BURROWS
IN SAND/MUD
GILLS
25 sec
CROSS-SECTION
MUSCLES
DORSAL BLOOD VESSEL
CLOSED SYSTEM!
REPRODUCTIVE
CELLS INTESTINE
VENTRAL NERVE CORD NEPHRIDIA
SETA /
CHAETES
VENTRAL BLOOD VESSEL
PARAPODIA
SPINES