Parasitology — MCQs Biology 50 min Score: 0 Attempted: 0/50 Subscribe 1. Parasitology is the study of: (A) Insects (B) Parasites and their hosts (C) Birds (D) Plants 2. A parasite is an organism that: (A) Lives independently (B) Lives on or in a host and benefits at the host’s expense (C) Only helps the host (D) Only reproduces in water 3. Ectoparasites live: (A) On the surface of the host (B) Inside the host (C) In water only (D) In soil only 4. Endoparasites live: (A) On the surface (B) Inside the host (C) In soil (D) In water 5. Permanent parasites: (A) Remain in or on the host for their entire life (B) Only visit the host occasionally (C) Live freely (D) Only feed on plants 6. Temporary parasites: (A) Stay permanently (B) Visit the host for feeding or reproduction (C) Live freely (D) Only infect plants 7. Facultative parasites: (A) Only live in soil (B) Must be parasitic (C) Only live in water (D) Can live freely but may become parasitic 8. Obligate parasites: (A) Can live freely (B) Cannot complete their life cycle without a host (C) Only infect plants (D) Only infect soil 9. A definitive host is: (A) Where the parasite reaches sexual maturity (B) Where the parasite grows but not sexually reproduces (C) Only intermediate host (D) Only accidental host 10. An intermediate host is: (A) Where the parasite develops but does not reproduce sexually (B) Where the parasite reproduces sexually (C) Only accidental host (D) Free-living stage 11. A vector is: (A) A host only (B) A parasite itself (C) An organism that transmits a parasite to the host (D) A free-living organism only 12. Mosquitoes are vectors for: (A) Typhoid (B) Malaria (C) Cholera (D) Tuberculosis 13. Plasmodium causes: (A) Schistosomiasis (B) Filariasis (C) Trypanosomiasis (D) Malaria 14. Wuchereria bancrofti causes: (A) Lymphatic filariasis (B) Malaria (C) Leishmaniasis (D) Sleeping sickness 15. Trypanosoma causes: (A) Schistosomiasis (B) Malaria (C) Sleeping sickness (D) Filariasis 16. Schistosoma causes: (A) Schistosomiasis (B) Malaria (C) Leishmaniasis (D) Filariasis 17. Leishmania causes: (A) Leishmaniasis (B) Malaria (C) Filariasis (D) Trypanosomiasis 18. Fasciola hepatica is a: (A) Intestinal protozoan (B) Blood fluke (C) Liver fluke (D) Nematode 19. Blood flukes belong to genus: (A) Schistosoma (B) Fasciola (C) Plasmodium (D) Trypanosoma 20. Tapeworms belong to phylum: (A) Nematoda (B) Platyhelminthes (C) Protozoa (D) Annelida 21. Roundworms belong to phylum: (A) Protozoa (B) Platyhelminthes (C) Nematoda (D) Arthropoda 22. Protozoan parasites are: (A) Bacteria (B) Multicellular only (C) Unicellular eukaryotes (D) Viruses 23. Giardia lamblia causes: (A) Leishmaniasis (B) Malaria (C) Filariasis (D) Giardiasis 24. Entamoeba histolytica causes: (A) Amoebic dysentery (B) Malaria (C) Leishmaniasis (D) Sleeping sickness 25. Toxoplasma gondii causes: (A) Filariasis (B) Malaria (C) Leishmaniasis (D) Toxoplasmosis 26. Cryptosporidium causes: (A) Malaria (B) Cryptosporidiosis (C) Filariasis (D) Schistosomiasis 27. Parasitic infections can be transmitted by: (A) Only air (B) Water, food, vectors, direct contact (C) Only soil (D) Only plants 28. Ectoparasites include: (A) Fasciola (B) Plasmodium (C) Ascaris (D) Lice, fleas, ticks 29. Endoparasites include: (A) Tapeworms, roundworms, flukes (B) Lice (C) Fleas (D) Ticks 30. Zoonotic parasites are: (A) Transmitted from animals to humans (B) Only from humans (C) Only from plants (D) Only waterborne 31. Intermediate host of Plasmodium is: (A) Dogs (B) Humans (C) Anopheles mosquito (D) Snails 32. Definitive host of Plasmodium is: (A) Snail (B) Mosquito (C) Human (D) Fish 33. Vector control helps prevent: (A) Only bacterial diseases (B) Parasitic diseases (C) Only viral diseases (D) Only fungal diseases 34. Malaria parasites belong to phylum: (A) Apicomplexa (B) Nematoda (C) Platyhelminthes (D) Arthropoda 35. Schistosoma life cycle requires: (A) Fly only (B) Mosquito only (C) Snail as intermediate host (D) Fish only 36. Lymphatic filariasis is caused by: (A) Wuchereria bancrofti (B) Plasmodium (C) Schistosoma (D) Trypanosoma 37. Tapeworm infections occur by: (A) Eating undercooked meat (B) Drinking water (C) Vector bite (D) Direct contact 38. Intestinal amoebiasis occurs by: (A) Tick bite (B) Mosquito bite (C) Ingesting cysts in contaminated food/water (D) Fly bite 39. Protozoan trophozoite stage is: (A) Dormant cyst (B) Active feeding stage (C) Egg stage (D) Larval stage 40. Cyst stage of protozoa is: (A) Adult stage (B) Feeding stage (C) Egg stage (D) Dormant, resistant stage 41. Insect vectors transmit: (A) Only fungal parasites (B) Only bacterial parasites (C) Protozoan, helminth, and viral parasites (D) Only plant parasites 42. Human parasitic nematodes include: (A) Fasciola only (B) Ascaris, Ancylostoma, Trichuris (C) Schistosoma only (D) Plasmodium only 43. Human tapeworms include: (A) Fasciola only (B) Taenia solium and Taenia saginata (C) Schistosoma only (D) Plasmodium only 44. Fasciola hepatica infects: (A) Lungs only (B) Blood only (C) Intestine only (D) Liver of herbivorous mammals 45. Parasitic infections can be diagnosed by: (A) Only ECG (B) Only X-ray (C) Only ultrasound (D) Microscopy, serology, molecular tests 46. Helminth infections are treated by: (A) Antivirals only (B) Antibiotics only (C) Anthelmintic drugs (D) Antifungals only 47. Protozoan infections are treated by: (A) Antifungals only (B) Antibiotics only (C) Antiprotozoal drugs (D) Anthelmintics only 48. Vector-borne parasitic diseases can be prevented by: (A) Vector control and protective measures (B) Only vaccination (C) Only antibiotics (D) Only surgery 49. Zoonotic parasites include: (A) Schistosoma only (B) Plasmodium only (C) Toxoplasma gondii and Trichinella (D) Giardia only 50. Parasitology is important for: (A) Only physiology (B) Only anatomy studies (C) Only genetics (D) Understanding, preventing, and controlling diseases