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 (A)</p> Signup and view all the answers

How is a Diphyllobothrium latum infection diagnosed?

<p>Detection of eggs in stool samples (B)</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. (C)</p> Signup and view all the answers

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

<p>Man (C)</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) (B)</p> Signup and view all the answers

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

<p>Gravid proglottids or eggs (D)</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 (A)</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 (A)</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 (D)</p> Signup and view all the answers

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

<p>Plerocercoid (A)</p> Signup and view all the answers

What is the definitive host for Diphyllobothrium latum?

<p>Humans (A)</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 (D)</p> Signup and view all the answers

What is the recommended treatment for Diphyllobothrium latum infection?

<p>Niclosamide (B)</p> Signup and view all the answers

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

<p>Vitamin B12 deficiency (D)</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 (A)</p> Signup and view all the answers

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