ESTUDYR
NAVLE GUIDE PARASITOLOGY MOST TESTED QUESTIONS AND
ANSWERS GRADED A+ WITH RATIONALES
1. What parasite causes anemia in dogs and cutaneous larval migrans in humans?
A. Toxocara
B. Ancylostoma
C. Echinococcus
D. Trichuris
Answer: B. Ancylostoma
Rationale: Ancylostoma, also known as hookworm, causes anemia in dogs due to blood-feeding and
cutaneous larval migrans in humans when larvae penetrate the skin.
2. How is Toxocara primarily transmitted in puppies?
A. Transmammary
B. Transplacental
C. Ingestion of eggs
D. Skin penetration
Answer: B. Transplacental
Rationale: Toxocara is transmitted to puppies transplacentally, while kittens acquire it transmammarily.
3. Which parasite causes visceral and ocular larval migrans in humans?
A. Ancylostoma
B. Toxocara
C. Echinococcus
D. Trichuris
Answer: B. Toxocara
Rationale: Toxocara, a roundworm, causes visceral and ocular larval migrans in humans when larvae
migrate to organs or the eye.
4. What is the treatment for tapeworms like Echinococcus and Dipylidium?
A. Fenbendazole
B. Praziquantel
,ESTUDYR
C. Ivermectin
D. Metronidazole
Answer: B. Praziquantel
Rationale: Praziquantel is the drug of choice for treating tapeworms, including Echinococcus and
Dipylidium.
5. Which of the following is a whipworm?
A. Trichuris vulpis
B. Toxocara canis
C. Ancylostoma caninum
D. Strongyloides stercoralis
Answer: A. Trichuris vulpis
Rationale: Trichuris vulpis is the whipworm that infects dogs and causes gastrointestinal issues.
6. What is the characteristic feature of Eimeria eggs?
A. Single sporocyst
B. 4 sporocysts
C. Acid-fast staining
D. Binucleate structure
Answer: B. 4 sporocysts
Rationale: Eimeria eggs are characterized by having 4 sporocysts within the oocyst.
7. Which parasite is diagnosed using a Baermann fecal technique?
A. Giardia
B. Strongyloides stercoralis
C. Toxocara
D. Echinococcus
Answer: B. Strongyloides stercoralis
Rationale: The Baermann technique is used to diagnose Strongyloides stercoralis (threadworm) due to
its larval stage.
8. What is the primary treatment for Giardia?
,ESTUDYR
A. Praziquantel
B. Metronidazole
C. Fenbendazole
D. Both B and C
Answer: D. Both B and C
Rationale: Giardia can be treated with metronidazole or fenbendazole.
9. Which parasite causes "swimming in falling leaf motion" and is pear-shaped?
A. Giardia
B. Tritrichomonas foetus
C. Cryptosporidium
D. Eimeria
Answer: A. Giardia
Rationale: Giardia trophozoites exhibit a characteristic falling leaf motion and are pear-shaped.
10. What is the treatment for Tritrichomonas foetus in kittens?
A. Metronidazole
B. Ronidazole
C. Fenbendazole
D. Praziquantel
Answer: B. Ronidazole
Rationale: Ronidazole is the treatment of choice for Tritrichomonas foetus in kittens.
11. Which parasite causes mucoid diarrhea and anemia in puppies and kittens?
A. Strongyloides stercoralis
B. Toxocara canis
C. Ancylostoma caninum
D. Trichuris vulpis
Answer: A. Strongyloides stercoralis
Rationale: Strongyloides stercoralis (threadworm) causes mucoid diarrhea and potential anemia in
young animals.
, ESTUDYR
12. What is the intermediate host for Paragonimus kellicotti?
A. Earthworm
B. Snail and crayfish
C. Flea
D. Mosquito
Answer: B. Snail and crayfish
Rationale: Paragonimus kellicotti, a lungworm, uses snails and crayfish as intermediate hosts.
13. Which parasite causes chorioretinitis and mental retardation in human children?
A. Toxoplasma gondii
B. Toxocara canis
C. Echinococcus granulosus
D. Giardia lamblia
Answer: A. Toxoplasma gondii
Rationale: Toxoplasma gondii can cause chorioretinitis and mental retardation in children, especially if
contracted congenitally.
14. What is the definitive host for Toxoplasma gondii?
A. Dogs
B. Cats
C. Cattle
D. Sheep
Answer: B. Cats
Rationale: Cats are the definitive host for Toxoplasma gondii, where sexual reproduction occurs.
15. What is the treatment for Toxoplasma gondii?
A. Praziquantel
B. Clindamycin
C. Fenbendazole
D. Metronidazole
Answer: B. Clindamycin
Rationale: Clindamycin is the treatment of choice for Toxoplasma gondii infections.
NAVLE GUIDE PARASITOLOGY MOST TESTED QUESTIONS AND
ANSWERS GRADED A+ WITH RATIONALES
1. What parasite causes anemia in dogs and cutaneous larval migrans in humans?
A. Toxocara
B. Ancylostoma
C. Echinococcus
D. Trichuris
Answer: B. Ancylostoma
Rationale: Ancylostoma, also known as hookworm, causes anemia in dogs due to blood-feeding and
cutaneous larval migrans in humans when larvae penetrate the skin.
2. How is Toxocara primarily transmitted in puppies?
A. Transmammary
B. Transplacental
C. Ingestion of eggs
D. Skin penetration
Answer: B. Transplacental
Rationale: Toxocara is transmitted to puppies transplacentally, while kittens acquire it transmammarily.
3. Which parasite causes visceral and ocular larval migrans in humans?
A. Ancylostoma
B. Toxocara
C. Echinococcus
D. Trichuris
Answer: B. Toxocara
Rationale: Toxocara, a roundworm, causes visceral and ocular larval migrans in humans when larvae
migrate to organs or the eye.
4. What is the treatment for tapeworms like Echinococcus and Dipylidium?
A. Fenbendazole
B. Praziquantel
,ESTUDYR
C. Ivermectin
D. Metronidazole
Answer: B. Praziquantel
Rationale: Praziquantel is the drug of choice for treating tapeworms, including Echinococcus and
Dipylidium.
5. Which of the following is a whipworm?
A. Trichuris vulpis
B. Toxocara canis
C. Ancylostoma caninum
D. Strongyloides stercoralis
Answer: A. Trichuris vulpis
Rationale: Trichuris vulpis is the whipworm that infects dogs and causes gastrointestinal issues.
6. What is the characteristic feature of Eimeria eggs?
A. Single sporocyst
B. 4 sporocysts
C. Acid-fast staining
D. Binucleate structure
Answer: B. 4 sporocysts
Rationale: Eimeria eggs are characterized by having 4 sporocysts within the oocyst.
7. Which parasite is diagnosed using a Baermann fecal technique?
A. Giardia
B. Strongyloides stercoralis
C. Toxocara
D. Echinococcus
Answer: B. Strongyloides stercoralis
Rationale: The Baermann technique is used to diagnose Strongyloides stercoralis (threadworm) due to
its larval stage.
8. What is the primary treatment for Giardia?
,ESTUDYR
A. Praziquantel
B. Metronidazole
C. Fenbendazole
D. Both B and C
Answer: D. Both B and C
Rationale: Giardia can be treated with metronidazole or fenbendazole.
9. Which parasite causes "swimming in falling leaf motion" and is pear-shaped?
A. Giardia
B. Tritrichomonas foetus
C. Cryptosporidium
D. Eimeria
Answer: A. Giardia
Rationale: Giardia trophozoites exhibit a characteristic falling leaf motion and are pear-shaped.
10. What is the treatment for Tritrichomonas foetus in kittens?
A. Metronidazole
B. Ronidazole
C. Fenbendazole
D. Praziquantel
Answer: B. Ronidazole
Rationale: Ronidazole is the treatment of choice for Tritrichomonas foetus in kittens.
11. Which parasite causes mucoid diarrhea and anemia in puppies and kittens?
A. Strongyloides stercoralis
B. Toxocara canis
C. Ancylostoma caninum
D. Trichuris vulpis
Answer: A. Strongyloides stercoralis
Rationale: Strongyloides stercoralis (threadworm) causes mucoid diarrhea and potential anemia in
young animals.
, ESTUDYR
12. What is the intermediate host for Paragonimus kellicotti?
A. Earthworm
B. Snail and crayfish
C. Flea
D. Mosquito
Answer: B. Snail and crayfish
Rationale: Paragonimus kellicotti, a lungworm, uses snails and crayfish as intermediate hosts.
13. Which parasite causes chorioretinitis and mental retardation in human children?
A. Toxoplasma gondii
B. Toxocara canis
C. Echinococcus granulosus
D. Giardia lamblia
Answer: A. Toxoplasma gondii
Rationale: Toxoplasma gondii can cause chorioretinitis and mental retardation in children, especially if
contracted congenitally.
14. What is the definitive host for Toxoplasma gondii?
A. Dogs
B. Cats
C. Cattle
D. Sheep
Answer: B. Cats
Rationale: Cats are the definitive host for Toxoplasma gondii, where sexual reproduction occurs.
15. What is the treatment for Toxoplasma gondii?
A. Praziquantel
B. Clindamycin
C. Fenbendazole
D. Metronidazole
Answer: B. Clindamycin
Rationale: Clindamycin is the treatment of choice for Toxoplasma gondii infections.
