Segmented Worms Review Guide
Fill in the table with the characteristics of segmented worms!
Kingdom of
segmented worms
Phylum of
segmented worms
Classes of
segmented worms
Common names
of classes
Number of setae
Presence of
parapodia
Body cavity type
Define…
Setae –
Parapodia –
Septa –
Cephalization –
Specialized organ system –
Larva –
Trochophore –
Sandworm –
Tubeworm –
Scavenger –
Filter-feeder –
Predator –
Organic –
Castings –
Anticoagulant –
Anesthetic –
Name: _____________________
Period: _____________________
Know…
… based on what characteristics segmented worms are classified
… where annelids add on new segments
… where the coelom is located
… where the major nerve cord is located
… what earthworms can sense
… through which order of organs food passes in an earthworm
… where most leeches live
… the difference in segmentation between leeches and earthworms
… the importance of marine worms in the ecosystem
… how earthworms can be used by humans
… how leeches can be used by humans
Be able to label the following diagram of the internal anatomy of an earthworm!
A.
B.
C.
D.
E.
mouth
pharynx
esophagus
crop
gizzard
F.
G.
H.
I.
J.
intestine
brain (cerebral ganglia)
ventral nerve cord
seminal vesicles (testes)
hearts (aortic arches)
Name the anatomic directions of the worm (use the scientific terms)!
a ___________________
b ___________________________
d _________________________
c______________________________
Be able to match the structures and functions of earthworm anatomy!
creates vacuum and secretes mucus for swallowing
thick skin ring that secrets mucus to protect the eggs
pumps blood
food storage sac
digests food into pieces small enough to be absorbed into blood
passage way to crop
channels blood from heart to rest of body
body opening for food to enter
returns blood to heart
filter toxins and waste to transport them out of the body
passes waste and undigested food out of the body
grinds and breaks down food into smaller pieces
coordinates movement by controlling nerve cord
carries information for movement to muscles and sensory
stimuli to brain