Classification of Helminthes: Platyhelminths, Nematodes, Trematodes, and Cestodes
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Questions and Answers

What is the definitive host for Diphyllobothrium latum?

  • Dogs
  • Man (correct)
  • Ctenocephalus fleas
  • Cats

    • Which morphological feature distinguishes Diphyllobothrium latum from other helminths?

  • Multiple suckers on the scolex
  • Presence of hooks on the scolex
  • Lack of genital pores on proglottids
  • Presence of a rostellum with 7 rows of spines (correct)

    • Which stage in the life cycle of Diphyllobothrium latum is infective to humans?

  • Embryo in eggs
  • Gravid proglottids
  • Adult worm in the intestine
  • Cysticercoid larva in fleas (correct)

    • What is the typical clinical presentation of a Diphyllobothrium latum infection in humans?

    <p>Actively motile proglottids in stools</p> Signup and view all the answers

    How is a Diphyllobothrium latum infection diagnosed?

    <p>Detection of eggs in stool samples</p> Signup and view all the answers

    Which of the following statements about the life cycle of Diphyllobothrium latum is true?

    <p>Humans can directly ingest the eggs to get infected.</p> Signup and view all the answers

    Which one of the following is the definitive host for Diphyllobothrium latum?

    <p>Man</p> Signup and view all the answers

    What is the recommended treatment for the early stages of Echinococcus granulosus infection?

    <p>PAIR (puncture, aspiration, injection, and reaspiration)</p> Signup and view all the answers

    Which of the following is the diagnostic stage for Dipylidium caninum infection?

    <p>Gravid proglottids or eggs</p> Signup and view all the answers

    What is the characteristic morphological feature of the Diphyllobothrium latum tapeworm?

    <p>Large scolex, no suckers, no hooks, ivory color</p> Signup and view all the answers

    Which of the following is the mode of transmission for Dipylidium caninum infection?

    <p>Ingestion of flea harboring cysticercoid larva</p> Signup and view all the answers

    What is the characteristic feature of the D-egg of Echinococcus granulosus?

    <p>Oval, operculated, and has a hexacanth embryo</p> Signup and view all the answers

    Which of the following is the infective stage of Diphyllobothrium latum?

    <p>Plerocercoid</p> Signup and view all the answers

    What is the definitive host for Diphyllobothrium latum?

    <p>Humans</p> Signup and view all the answers

    Which of the following statements about the morphology of Diphyllobothrium latum is correct?

    <p>Its eggs are oval, operculated, and have a hexacanth embryo</p> Signup and view all the answers

    What is the recommended treatment for Diphyllobothrium latum infection?

    <p>Niclosamide</p> Signup and view all the answers

    Which of the following is a clinical manifestation of Diphyllobothrium latum infection?

    <p>Vitamin B12 deficiency</p> Signup and view all the answers

    Which of the following statements about the life cycle of Diphyllobothrium latum is correct?

    <p>The second intermediate host is a freshwater fish</p> Signup and view all the answers

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