b. human liver fluke c. sheep liver fnuke d. lancet nuke 20. Opisthorchis sinens
ID: 256518 • Letter: B
Question
b. human liver fluke c. sheep liver fnuke d. lancet nuke 20. Opisthorchis sinensis infects humans by encysting in which of the following? a. herbage b. fish c. reptiles d. crustaccea True and False. Mark “A” for true answers and mark "B" for false answers. 21. Tritrichomouas foetus is a pathogenic parasite of cattle 22. Chilomastix mesnili is a pyriform flagellate pathogenicto man. 23. Of the human flagellates, Trichomonas vaginalis is the only one known to be sexually transmitted. 24. The blood flukes have fork-tailed cercariae 25 Coracidium is a ciliated larva of the trematode, Fasciola herpatica. 26. Entamoeha coli is commensal. 27. The infective larva of non-taenioid Cestodes is cysticercoid 28. A mollusk is always the first intermediate hosr of the digenetie trematodes. 29. In cestode anatomy, a ripe proglottid is synonymous to a gravid proglottid. 30. The formation of a chain of proglittids is referred to as strobilization 31. In the life cycle Taenia saginata, cysticercoid is the infective stage. 32. The egg of Schistosoma haematobium has lateral spine.Explanation / Answer
Answer 20. The correct option is Fish. Opisthorchis Sinensisinfection is acquired when people ingest raw or undercooked fish.
Answer 21. True.
Answer 22. False (It is a pyriform flagellate but it is not pathogenic to humans)
Answer 23. True
Answer 24. True
Answer 25. False (In Fasciola hepatica, coracidium is not the larval stage, its life cycle stage is Miracidium)
Answer 26. True (Entamoeba coli do exist as a commensal parasite in the human gastrointestinal tract)
Answer 27. False (Non-taenioid cestodes do not have a cysticercoid)
Answer 28. True
Answer 29. True
Answer 30. True (The sum of the proglottids is called a strobila and the process is known as strobilization)
Answer 31. False (The infective larval stage in Taenia saginata is cysticercus)
Answer 32. True
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