Parasitology Exam 2 Review ZOO 4234 FIU 2022

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2022 Parasitology Exam 2 Study Guide 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 characteristic 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 Vertebrae. 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) Intestines 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 andrate 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 andatrae 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 Product 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. 15. Which of the following is an epidemiological factor for human infection with Dicrocoelium dendriticum ? a) Eating Undercooked Fish b) Eating Undercooked Frog c) Eating Raw Aquatic Plants d) Accidentally Eating an Ant e) None of the Above. 16. Which of the following is characteristic of the digenean nervous system (NS)? a) Series Of Transverse Commissures b) 3 Main Pairs of Longitudinal Trunks c) Sensory Endings Extend from Tegument d) Cerebral Ganglia with Orthogonal Ns e) All of the Above. 17. Which of the following may be characteristic of the digenean reproductive system? a) Most Are Hermaphrodites b) Some Can Self-Fertilize c) Cross-Fertilize If 2 Or More Are Present d) Dioecious Is the Exception e) All of the Above.

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18. A 32-year-old man went to the ER with chronic cough, breathing difficulty, and sputum containing blood. He recently went to Mardi Gras where he ate raw crayfish. Which of the following digeneans would most likely cause the aforementioned symptoms? a) Schistosoma haematobium b) Fasciola hepatica c) Dicrocoelium dendriticum d) Clonorchis sinensis e) Paragonimus westermani 19. Which of the following is an epidemiological factor for human infection with Alaria americana ? a) Eating Undercooked Fish b) Eating Undercook Crab c) Eating Undercooked Frog d) Swimming In A Contaminated Lake e) None of the Above. 20. The study of climate and culture on the distribution of a disease in a population can be best described as _____. a) Macroepidemiology b) Nidus c) Microepidemiology d) Landscape epidemiology e) None of the Above. 21. Which phase of schistosomiasis corresponds to the dramatic increase in egg production which may cause chills, fever, fatigue, headache, malaise, muscle aches, and GI discomfort? a) Migratory Phase b) Chronic Phase c) Acute Phase d) Schisto Phase e) None of the Above. 22. Which of the following is not a characteristic of Platyhelminthes? a) Most Are Parasitic b) Dorsoventrally Flattened c) Triploblastic d) Pseudocoelomate e) All of the Above. 23. Which digenean species covered has the following life cycle characteristics? Human  Freshwater Snail  Crab a) Clonorchis sinensis

b) Schistosoma japonicum c) Prosthogonimus macrorchis d) Dicrocoelium dendriticum e) None of the Above. 24. Which digenean species covered has the following life cycle characteristics? Sheep  Freshwater Snail  a) Alaria americana b) Fasciola hepatica c) Paragonimus westermani d) Ribeiroia ondatrae e) None of the Above. 25. Which of the following is an epidemiological factor for human infection with Paragonimus westermani ? a) Eating Undercooked Fish b) Eating Undercooked Frog c) Eating Undercooked Snail d) Eating Undercooked Crab e) None of the Above. 26. Which digenean species covered has the following life cycle characteristics? Chicken  Freshwater Snail  Dragonfly  a) Paragonimus westermani b) Schistosoma haematobium c) Prosthogonimus macrorchis d) Leucochloridium variae e) None of the Above. 27. Which of the following is the male copulatory organ in digeneans? a) Seminal Vesicle b) Vas Efferens c) Cirrus d) Oogenotop e) None of the Above. 28. Which of the following is an epidemiological factor for human infection with Clonorchis sinensis ? a) Eating Undercooked Snail b) Swimming In A Contaminated Lake c) Eating Undercooked Fish d) Eating Undercooked Beef e) None of the Above.

29. Which digenean species covered has he following life cycle characteristics? Fox  Freshwater Snail  Tadpole ( frog )  Water Snake  a) Fasciola hepatica b) Paragonimus westermani c) Alaria americana d) Prosthogonimus macrorchis e) None of the Above. 30. Which of the following is not a class belonging to the phylum Platyhelminthes? a) Turbellaria b) Monogenea c) Cestoidea d) Nematoda e) All of the Above. 31. Which of the following is an epidemiological factor for human infection with Fasciola hepatica ? a) Eating Undercooked Beef b) Accidentally Eating an Ant c) Eating Raw Aquatic Plants d) Eating Undercooked Chicken e) None of the Above. 32. A parasitologist examined a population of rats for Schistosoma mansoni infection and determined most of the parasites occurred in a relative small number of rats, while most rats were not infected. This situation is known as _____. a) Intensity b) Parasite Community c) Incidence d) Overdispersed e) None of the Above. 33. Which of the following controls the release of ova from the ovary in digeneans? a) Ootype b) Vitellaria c) Oogenotop d) Ovicapt e) None of the Above. 34. Which of the following methods for preparing fish can destroy Clonorchis sinensis metacercaria?

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a) Salting b) Pickling c) Smoking d) Drying e) None of the Above. 35. A parasitologist interested in determining the percentage of rats infected with Schistosoma mansoni at a given time would determine the _____ of infection. a) Prevalence b) Density c) Incidence d) Abundance e) None of the Above. 36. What behavioral changes occur in the 2nd intermediate host in the life cycle of Dicrocoelium dendriticum ? a) Snail “Cough Up” Slime Balls. b) Ant Does Not Leave Its Nest. c) Snail Remains Visible on Tree Branches d) Ant Bites Down on Blade of Grass e) None of the Above. 37. The study of parasite strains, host genetic variation, and distribution of disease in a population can best be described as _____. a) Macroepidemiology b) Nidus c) Microepidemiology d) Landscape epidemiology e) None of the Above. 38. A parasitologist interested in determining the percentage of rats infected with Schistosoma mansoni at a given time would determine the _____ of infection. a) Prevalence b) Density c) Incidence d) Abundance e) None of the Above. 39. What behavioral changes occur in the 1st intermediate host in the life cycle of Leucochloridium variae ? a) Snail Takes Cover under Leaf Litter. b) Ant Does Not Leave its Nest. c) Snail Remains Visible on Tree Branches.

d) Ant Bites Down on Blade of Grass. e) None of the Above. 40. Parasitology students performed a necropsy on a pelican and found that it was infected with 270 nematodes all belonging to the same species. This count is best known as _____. a) Intensity b) Parasite Community c) Incidence d) Abundance e) None of the Above.

Parasitology Exam 2 Review ZOO 4234 FIU 2022

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