MCQs Parasitology with Answers

Last updated on June 11th, 2021

  1. Each of the following statements concerning Ascaris lumbricoides is correct except:
    a. Ascaris lumbricoides is one of the largest nematode
    b. Ascaris lumbricoides can cause pneumonia
    c. Both dogs and cats are intermediate hosts of Ascaris lumbricoides
    d. A lumbricoides is transmitted by ingestion of eggs
  2. Each of the following statements concerning kala-azar is correct except:
    a. Kala-azar is caused by Leishmania donovani
    b. kala-azar is transmitted by the bite of sandflies
    c. Kala-azar occurs primarily in rural Latin America
    d. Kala-azar can be diagnosed by finding amastigotes in bone marrow
  3. Each of the following statements concerning hookworm infection is correct except:
    a. Hookworm infection can cause pneumonia
    b. Hookworm infection is acquired by humans when filariform larvae penetrate the skin
    c. Hookworm infection is caused by Necator americanus
    d. Hookworm infection can be diagnosed by finding the trophozoite in the stool
  4. Each of the following statements concerning Trichomonas vaginalis is correct except:
    a. T. vaginalis is transmitted sexually
    b. T. vaginalis can be diagnosed by visualizing the trophozoite
    c. T. vaginalis can be treated effectively with metronidazole
    d. T. vaginalis causes bloody diarrhea
  5. Each of the following statements concerning Giardia lamblia is correct except:
    a. G. lamblia has both a trophozoite and cyst stage in its life cycle
    b. G. lamblia is transmitted by the fecal-oral route from both human and animal sources
    c. G. lamblia causes hemolytic anemia
    d. G. lamblia can be diagnosed by the string test
  6. Each of the following statements concerning malaria is correct except
    a. The female anopheles mosquito is the vector
    b. Early infection, sporozoites enter hepatocytes
    c. Release of merozoites from red blood cells causes fever and chills
    d. The principal site of gametocyte formation is the human gastrointestinal tract.
  7. Each of the following parasite is transmitted by mosquitoes except:
    a. Leishmania donovani
    b. Wuchereria bancrofti
    c. Plasmodium vivax
    d. Plasmodium falciparum
  8. Pigs or dogs are the sources of human infection by each of the following parasites except:
    a. Echinococcus granulosus
    b. Taenia solium
    c. Ascaris lumbricoides
    d. Trichinella spiralis
  9. In malaria, the form of plasmodia that is transmitted from mosquito to human is the
    a. Sporozoite
    b. Gametocyte
    c. Merozoite
    d. Hypnozoite
  10. Which of the following agent is used to prevent Malaria
    a. Mebendazole
    b. Chloroquine
    c. Inactivated vaccine
    d. Zinc table

Answer Keys

  1. c (Incorrect statement is: Both dogs and cats are the intermediate hosts of Ascaris lumbricoides)
  2. c (Incorrect statement is: Kala-azar occurs primarily in rural Latin America)
  3. d (Incorrect statement is:  Hookworm infection can be diagnosed by finding the trophozoite in the stool)
  4. d (Incorrect statement isT. vaginalis causes bloody diarrhea)
  5. c (Incorrect statement is: G. lamblia causes hemolytic anemia)
  6. d  (Incorrect statement is: The principal site of gametocyte formation is the human gastrointestinal tract).
  7. a (Leishmania donovani). Leishmania donovani is transmitted by the bite of infected female phlebotomine sandflies
  8. c (Ascaris lumbricoides)
  9. a (Sporozoite)
  10. b ( Chloroquine)
About Acharya Tankeshwar 474 Articles
Hello, thank you for visiting my blog. I am Tankeshwar Acharya. Blogging is my passion. I am working as an Asst. Professor and Microbiologist at Department of Microbiology and Immunology, Patan Academy of Health Sciences, Nepal. If you want me to write about any posts that you found confusing/difficult, please mention in the comments below.


  1. say some thing about molecular mimicry mechanisms by which parasites evade host immunity, Molecular diagnosis method for parasites. Thank you

  2. Questions are very smart ! continue in such away..If you can please attach me for questions related to entrance for Msc. (Parasitology).

  3. am very happy with the way you make things clear, my request is to get structured question on PROZOA AND METAZOA please

  4. very useful QUESTIONS. Would like to get questions on the Arthropoda of medical importance like the phthiraptera , the Myasis causing flies etc

  5. Hello are there any extension to these questions. Or a question bank in that format. Thank you very much for the upload

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