Parasitology Exam 2
1) Which of the following is an epidemiological factor for human infection with Schistosoma
haematobium?
a) eating undercooked fish
b) eating undercooked crab
c) eating raw aquatic plants
d) swimming in a contaminated lake
e) none of the above
2) Choose the best answer that represents the chronological order of digenean development
a) adult egg metacercaria sporocyst redia cercaria miracidia
b) adult sporocyst egg redia cercaria metacercaria
c) adult egg miracidia sporocyst redia cercaria metacercaria
d) adult redia sporocyst redia cercaria metacercaria
e) none of the above
3) Which of the following will not increase the likelihood that Leucochlrodium variae is consumed by
the definitive host?
a) brightly colored broodsac
b) snail beneath leaf litter
c) pulsating broodsac
d) snail on tree branches
e) none of the above
4) Virulence deals with the consequences of a parasite on the hosts .
a) anatomy
b) behavior
c) reproductive success
d) physiology
e) all of the above
5) Aspidobothreans share a most recent common ancestor with .
a) monogenea
b) turbellaria
c) digenea
d) cestoidea
e) none of the above
6) Which of the following is not a life cycle characteristics of Leucochlrodium variae?
a) broodsac
b) land snail
c) warbler(bird)
d) aquatic habitat
e) none of the above
7) Which of the following is not a characteristic of digeneans?
a) develops in at least 2 hosts
b) subclass within trematoda
c) parasitizes all classes of vertebrates
d) first intermediate host is an arthropod
e) none of the above
, 8) Digeneans living in the have no necessity to breach host tissue.
a) rectum
b) blood vessels
c) lungs
d) intestine
e) none of the above
9) Which of the following is not a characteristic of monogenea?
a) economic importance
b) opisthaptor with hooks
c) ectoparasite on fish gills
d) Baer's disk
e) none of the above
10) Which digenean species covered has the following life cycle characteristics?
Heron (bird) freshwater snail tadpole (frog)
a) Ribeiroia ondatrae
b) Dicrocoelium dendriticum
c) Clonorchis sinensis
d) Prosthogonimus macrorchis
e) none of the above
11) Which digenean species covered has the following life cycle characteristics?
Human freshwater snail
a) Ribeiroia ondatrae
b) Leucochloridium variae
c) Alaria americana
d) Schistosoma mansoni
e) none of the above
12) Which of the following is characteristic of excretion and osmoregulation in digeneans?
a) removal of waste products of metabolism
b) regulation of internal osmotic pressure
c) regulation of internal ionic pressure
d) removal of harmful substances
e) all of the above
13) Which digenean species covered has the following life cycle characteristics?
Human freshwater snail fish
a) Clonorchis sinensis
b) Schistosoma mansoni
c) Paragonimus westermani
d) Alaria americana
e) none of the above
14) Which digenean species covered has the following life cycle characteristics?
Sheep land snail ant
a) Clonorchis sinensis
b) Alaria americana
c) Ribeiroia ondatrae
d) Dicrocoelium dendriticum
e) none of the above
1) Which of the following is an epidemiological factor for human infection with Schistosoma
haematobium?
a) eating undercooked fish
b) eating undercooked crab
c) eating raw aquatic plants
d) swimming in a contaminated lake
e) none of the above
2) Choose the best answer that represents the chronological order of digenean development
a) adult egg metacercaria sporocyst redia cercaria miracidia
b) adult sporocyst egg redia cercaria metacercaria
c) adult egg miracidia sporocyst redia cercaria metacercaria
d) adult redia sporocyst redia cercaria metacercaria
e) none of the above
3) Which of the following will not increase the likelihood that Leucochlrodium variae is consumed by
the definitive host?
a) brightly colored broodsac
b) snail beneath leaf litter
c) pulsating broodsac
d) snail on tree branches
e) none of the above
4) Virulence deals with the consequences of a parasite on the hosts .
a) anatomy
b) behavior
c) reproductive success
d) physiology
e) all of the above
5) Aspidobothreans share a most recent common ancestor with .
a) monogenea
b) turbellaria
c) digenea
d) cestoidea
e) none of the above
6) Which of the following is not a life cycle characteristics of Leucochlrodium variae?
a) broodsac
b) land snail
c) warbler(bird)
d) aquatic habitat
e) none of the above
7) Which of the following is not a characteristic of digeneans?
a) develops in at least 2 hosts
b) subclass within trematoda
c) parasitizes all classes of vertebrates
d) first intermediate host is an arthropod
e) none of the above
, 8) Digeneans living in the have no necessity to breach host tissue.
a) rectum
b) blood vessels
c) lungs
d) intestine
e) none of the above
9) Which of the following is not a characteristic of monogenea?
a) economic importance
b) opisthaptor with hooks
c) ectoparasite on fish gills
d) Baer's disk
e) none of the above
10) Which digenean species covered has the following life cycle characteristics?
Heron (bird) freshwater snail tadpole (frog)
a) Ribeiroia ondatrae
b) Dicrocoelium dendriticum
c) Clonorchis sinensis
d) Prosthogonimus macrorchis
e) none of the above
11) Which digenean species covered has the following life cycle characteristics?
Human freshwater snail
a) Ribeiroia ondatrae
b) Leucochloridium variae
c) Alaria americana
d) Schistosoma mansoni
e) none of the above
12) Which of the following is characteristic of excretion and osmoregulation in digeneans?
a) removal of waste products of metabolism
b) regulation of internal osmotic pressure
c) regulation of internal ionic pressure
d) removal of harmful substances
e) all of the above
13) Which digenean species covered has the following life cycle characteristics?
Human freshwater snail fish
a) Clonorchis sinensis
b) Schistosoma mansoni
c) Paragonimus westermani
d) Alaria americana
e) none of the above
14) Which digenean species covered has the following life cycle characteristics?
Sheep land snail ant
a) Clonorchis sinensis
b) Alaria americana
c) Ribeiroia ondatrae
d) Dicrocoelium dendriticum
e) none of the above
