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Chapter 13
1.
A)
B)
C)
D)
E)
__________ is the segmental arrangement of body parts.
Metamerism
Triploblastism
Tagmatization
Serialism
Cephalization
2.
A)
B)
C)
D)
E)
Which of the following is not a characteristic of the phylum Annelida?
body with metameric segments
chitinous exoskeleton
closed circulatory system
ventral ganglionated nerve cords
excretion by metanephridia or protonephridia
3. Some segmented animals have groups of segments specialized for particular functions.
The process of forming distinct body regions is called:
A) metamerism.
B) eutely.
C) tagmatization.
D) cephalization.
E) differentiation.
4.
A)
B)
C)
D)
E)
A feature that does not characterize either annelids or arthropods is
a ventral nerve cord.
bilateral symmetry.
a complete digestive tract.
an acoelomate condition.
triploblastic organization.
5.
A)
B)
C)
D)
E)
The most speciose class of annelids is __________. Its members are primarily marine.
Chaetognatha
Oligochaeta
Hirudinea
Gnathostomulida
Polychaeta
6.
A)
B)
C)
D)
E)
Polychaetes are distinguished by lateral extensions of the body called
parapodia.
setae.
prostomi.
palps.
tentacles.
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7. The region of the polychaete head that is dorsal and anterior to the mouth, and is
sensory in function, is the __________.
A) gnathostome
B) prostomium
C) peristomium
D) protostome
E) pygidium
8.
A)
B)
C)
D)
E)
The body part surrounding the mouth and bearing tentacles is the __________.
pharynx
head
peristomium
notopodium
cirrus
9. The body cavity of most annelids is divided into compartments by “curtains” of tissue
called
A) cirri.
B) setae.
C) muscles.
D) septa.
E) pleura.
10.
A)
B)
C)
D)
E)
External respiratory exchange in most annelids is accomplished by
ventilation.
active transport.
endocytosis.
facilitated diffusion.
diffusion.
11.
A)
B)
C)
D)
E)
__________ increase the surface area for respiratory exchange in some polychaetes.
Parapodial gills
Dermal branchiae
Annuli
Septa
Mesenteries
12.
A)
B)
C)
D)
E)
Polychaetes have a __________ circulatory system.
bloodless
closed
lacunar
open
countercurrent
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13. Each polychaete body compartment has a __________ ganglion which aids in
coordination of swimming and crawling.
A) suprapharyngeal
B) subpharyngeal
C) segmental
D) cerebral
E) cephalic
14. The __________ are unusual parts of the annelid nervous system responsible for rapid
movements such as escape reactions.
A) segmental ganglia
B) subesophageal ganglia
C) cerebral fibers
D) giant fibers
E) supraesophageal ganglia
15. __________ are sensory pits on the heads of polychaetes with chemoreceptors for food
detection.
A) Olfactors
B) Auricles
C) Statocysts
D) Phasmids
E) Nuchal organs
16.
A)
B)
C)
D)
E)
The major nitrogenous waste produced by annelids is
ammonia.
urea.
uric acid.
guanine.
urine.
17.
A)
B)
C)
D)
E)
__________ are the excretory organs of most polychaetes.
Chloragogues
Metanephridia
Osphradia
Nuchal glands
Ommatidia
18.
A)
B)
C)
D)
E)
The open, ciliated funnel of the metanephridium is the
infundibulum.
epitoke.
nephrostome.
nephridiopore.
flame bulb.
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19.
A)
B)
C)
D)
E)
Some polychaetes exhibit epitoky; the __________ is the non-reproductive individual.
anatoke
heterotoke
protogyn
atoke
hypertoke
20. The two annelid subclasses containing the earthworms and the leeches have now been
united into the class
A) Hiruchaeta.
B) Chaetognatha.
C) Polychaeta.
D) Oligodinea.
E) Clitellata.
21. The girdle-like structure used for mucus secretion during copulation in oligochaetes is
the
A) clitellum.
B) parapodium.
C) atoke.
D) epitoke.
E) prostomium.
22.
A)
B)
C)
D)
E)
During feeding, the __________ of oligochaetes helps to pump in food.
prostomium
pharynx
clitellum
esophagus
mouth
23.
A)
B)
C)
D)
E)
The __________ is a thin-walled storage area in the oligochaete digestive tract.
pharynx
stomach
crop
esophagus
gizzard
24.
A)
B)
C)
D)
E)
As in birds, the __________ acts to grind food in the oligochaete digestive tract.
gastric mill
pharynx
crop
gizzard
stomach
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25. The __________ is a dorsal invagination that increases the surface area of the
earthworm intestine.
A) crop
B) clitellum
C) esophagus
D) chloragogen
E) typhlosole
26.
A)
B)
C)
D)
E)
Clitellate reproduction may be characterized by
the female picking up the spermatophore with the cloaca.
reciprocal sperm transfer.
hypodermic impregnation.
amplexus.
shedding of gametes into the environment.
27.
A)
B)
C)
D)
E)
In annelids, the __________ is a site of amino acid metabolism.
liver
typholosole
chloragogen tissue
clitellum
kidney
28.
A)
B)
C)
D)
E)
Chloragogen tissue of annelids is similar in function to the vertebrate
kidneys.
pancreas.
gall bladder.
liver.
spleen.
29.
A)
B)
C)
D)
E)
Annelids convert ammonia to urea in
the metanephridia.
calciferous glands.
nuchal glands.
clitellar tissue.
chloragogen tissue.
30.
A)
B)
C)
D)
E)
Clitelates may be characterized as __________ with respect to reproduction.
monoecious
dioecious
asexual
protandric
parthenogenic
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31.
A)
B)
C)
D)
E)
In the class Clitellata, the larval form is
a trochophore.
absent.
a veliger.
dormant.
free-living.
32.
A)
B)
C)
D)
E)
Leeches belong to the annelid subclass
Oligochaeta.
Chaetognatha.
Hirudinea.
Gnathobdellida.
Polychaeta.
33.
A)
B)
C)
D)
E)
The superficial external rings on a leech are called:
proglottids.
tagmata.
metameres.
annuli.
strobilia.
34.
A)
B)
C)
D)
E)
Leeches typically lack
segments.
a digestive tract.
sense organs.
a pharynx.
setae.
35.
A)
B)
C)
D)
E)
The anticoagulant secreted by leech salivary glands is
hirudin.
saliva.
salivary amylase.
hemerythrin.
prothrombin.
36.
A)
B)
C)
D)
E)
Over the last several thousand years, leeches have been utilized by humans
to attack foreign invaders.
to remove blood from the body.
to prevent malaria.
as food.
to investigate the functioning of nervous systems.
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37. The members of the annelid class __________ are considered closest to the ancestral
annelid condition.
A) Chaetognatha
B) Gnathobdellida
C) Polychaeta
D) Oligochaeta
E) Clitellata
38.
A)
B)
C)
D)
E)
Leeches become __________ when searching for food.
negatively phototactic
negatively thigmotactic
negatively chemotactic
positively phototactic
positively thigmotactic
39.
A)
B)
C)
D)
E)
Of the following features characteristic of oligochaetes, which is lacking in polychaetes?
coelom
spiral cleavage
setae
triploblastic development
clitellum
40.
A)
B)
C)
D)
E)
Which of the characters below is not a feature of leeches?
hypodermic impregnation
asexual reproduction
reciprocal sperm transfer
sexually
production of a cocoon
41.
A)
B)
C)
D)
E)
The echiurans and two groups of deep sea worms are likely to be
removed from the Clitellata.
removed from the Annelida.
added to the subclass Hirudinea.
added to the subclass Oligochaeta.
added to the class Polychaeta.
42.
A)
B)
C)
D)
E)
The class Clitellata was recently created to
unite the polychaetes and leeches.
unite the polychaetes and earthworms.
unite the oligochaetes and leeches.
further subdivide the leeches.
further subdivide the oligochaetes.
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