1. WORM VOCAB ONLY

2. One of the external bristles on annelids ______________
A pair of nerve clusters
that serve as a brain
at the anterior end
of some invertebrates _________________
A thickened section around
an earthworm’s body that ______________
produces mucous for reproduction
Seta (Setae)
Cerebral ganglia
clitellum

3. Flame cell hermaphrodite typhlosole
In a flatworm, a cell that collects nitrogen waste and excess body water for the excretory system and excretes it through the skin ______________
An organism that produces both male and female gametes (sperm & eggs) _________________
An infolding of the intestinal wall of an earthworm that increases surface area
to absorb more nutrients ________________
Flame cell
hermaphrodite
typhlosole

4. Fleshy flap of skin that overhangs the mouth of an earthworm and senses light/dark
________________
A NON-CELLULAR LAYER in parasitic round worms that protects them from the host’s digestive and immune system
(also seen in earthworms)_________________
A structure in a female or hermaphrodite
that receives sperm ________________
prostomium
cuticle
Seminal receptacle

5. tegument nephridia septa
A continuous sheet of FUSED CELLS that covers the external surface of a fluke or tapeworm & protects the worm from the host’s digestive and immune system __________________
Tubule through which some invertebrates
(like segmented and round worms) eliminate nitrogen waste _________________
Dividing walls that separate the coelom into compartments in an earthworm ________________
tegument
nephridia
septa

6. Type of circulatory system in which blood is contained in vessels______________
Type of development in which young start as an immature larva and must undergo metamorphosis to become adults _______________
Type of reproduction in which offspring are produced by combining genetic material from 2 parents ________________
closed
indirect
sexual

7. pharynx Aortic arches scolex
Muscular part that pulls food into the digestive system______________
5 pair of muscular tubes which connect the
dorsal and ventral blood vessels and force blood
through the circulatory system ________________
A knob shaped organ bearing hooks and suckers that lies at the anterior end of a tapeworm ________________
pharynx
Aortic arches
scolex

8. One of the many body segments of a tapeworm containing reproductive organs ______________
The structure that stores soil waiting to be
digested in earthworms _________________
A muscular region in the digestive tract of
earthworms that crushes and grinds food ________________
proglottid
crop
gizzard

9. The host in which the adults of a parasitic
worm live and reproduce ______________
A disease characterized by muscle pain and stiffness caused by a parasitic blood fluke of the genus Schistosoma _________________
A carbohydrate found in the cocoons of earthworms and the exoskeletons of some
arthropods ________________
Primary host
schistosomiasis
chitin

10. Structure that stores sperm made to give away to other worms ______________
Type of coelom seen in earthworms in which the body cavity is lined on both sides by mesoderm _________________
Flatworm phylum that includes Planaria, flukes, and tapeworms ________________
Seminal vesicles
Eucoelom or “true” coelom
Platyhelminthes

11. Ring around the body of an earthworm that produces mucous for reproduction ______________
Traction bristles on the ventral surface of an earthworm _________________
Round worm phylum that includes Ascaris, pinworms, hookworms, and filarial worms________________
clitellum
setae
Nematoda

12. Reproductive organ that produces eggs ______________
A disease caused by a parasitic round worm of the genus Trichinella; characterized by muscle pain and stiffness _________________
Opening for digestive waste in an earthworm ________________
ovary
trichinosis
anus

13. Reproductive organ that produces sperm ______________
A cluster of nerve cells_______________
Segmented worm phylum which includes earthworms and leeches ________________
testes
ganglia
Annelida

14. Development in which offspring hatch or are born with a similar shape as the adult form and must just grow bigger ______________
Type of symmetry in which dividing the animal produces 2 mirror images _______________
Ability to regrow lost body parts ________________
direct
bilateral
regeneration

15. Type of reproduction in which offspring are produced from the genetic material of only one parent______________
Body system that removes nitrogen waste and maintains the balance of ions/water _______________
Digestive organ in an earthworm where nutrients are absorbed ________________
asexual
excretory
intestine

16. Shared one opening digestive/circulatory space seen in Planaria ______________
Joining of sperm and egg outside the mother’s body_______________
Maintaining the balance of water and ions in the body _______________
Gastrovascular cavity
External fertilization
osmoregulation

17. Concentration of a “brain” and sensory organs at the anterior end of an animal______________
Outside body covering on an animal_______________
Body system that exchanges gases with the environment________________
cephalization
integument
respiratory

18. Line that runs from the male genital pore to the clitellum along which sperm travels______________
Type of coelom seen in flatworms with no space around the internal organs_______________
Sperm groove
acoelom

19. Opening for sperm leaving an earthworm to be given away ______________
Space around body organs ______________
Organism with spiral determinate cleavage whose blastopore becomes its mouth ________________
Male genital pore
coelom
protostome

20. Class to which earthworms belong ______________
Organisms without a backbone _______________
Oligochaeta
invertebrates