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Worksheets

FINAL PART 1

Total questions: 56

Worksheet time: 31mins

Name
Class
Date
1.

Which of the following parasites resides in the lungs as adults?

a)

Clonorchis sinensis

b)

Paragonimus westermani

c)

Fasciola hepatica

d)

Schistosoma haematobium

2.

What is the common name for Fasciolopsis buski?

a)

Chinese liver fluke

b)

Giant intestinal fluke

c)

Oriental lung fluke

d)

Blood fluke

3.

The developmental stage released by the snail host is called:

a)

Miracidium

b)

Sporocyst

c)

Cercaria

d)

Metacercaria

4.

Which of the following parasites uses aquatic plants as the second intermediate host?

a)

Clonorchis sinensis

b)

Paragonimus westermani

c)

Fasciola hepatica

d)

Metagonimus yokogawai

5.

What is the diagnostic stage of most trematodes found in stool?

a)

Metacercaria

b)

Cercaria

c)

Egg (ovum)

d)

Miracidium

6.

Which trematode is primarily associated with urinary tract disease?

a)

Schistosoma japonicum

b)

Schistosoma haematobium

c)

Clonorchis sinensis

d)

Paragonimus westermani

7.

In which organ do Fasciola hepatica adult worms reside?

a)

Intestine

b)

Liver (bile ducts)

c)

Lungs

d)

Bladder

8.

Which trematode causes hematuria and is associated with bladder cancer?

a)

Fasciolopsis buski

b)

Clonorchis sinensis

c)

Schistosoma haematobium

d)

Paragonimus westermani

9.

Which stage penetrates the snail host in the trematode life cycle?

a)

Redia

b)

Cercaria

c)

Sporocyst

d)

Miracidium

10.

What is the common name for Paragonimus westermani?

a)

Chinese liver fluke

b)

Giant intestinal fluke

c)

Oriental lung fluke

d)

Sheep liver fluke

11.

Which of the following trematodes infects humans by skin penetration rather than ingestion?

a)

Metagonimus yokogawai

b)

Clonorchis sinensis

c)

Schistosoma mansoni

d)

Fasciolopsis buski

12.

Which species of Schistosoma resides in the mesenteric veins of the colon?

a)

Schistosoma japonicum

b)

Schistosoma haematobium

c)

Schistosoma mansoni

d)

Schistosoma intercalatum

13.

Which of the following trematodes uses freshwater fish as its second intermediate host?

a)

Clonorchis sinensis

b)

Fasciola hepatica

c)

Paragonimus westermani

d)

Fasciolopsis buski

14.

What larval stage is infective to humans in most trematodes (excluding schistosomes)?

a)

Sporocyst

b)

Cercaria

c)

Miracidium

d)

Metacercaria

15.

Which of the following is associated with 'snail fever'?

a)

Fasciola hepatica

b)

Schistosoma spp.

c)

Paragonimus westermani

d)

Clonorchis sinensis

16.

The term 'blood flukes' refers to which genus of trematodes?

a)

Fasciola

b)

Clonorchis

c)

Schistosoma

d)

Paragonimus

17.

What organism causes Katayama fever?

a)

Clonorchis sinensis

b)

Fasciolopsis buski

c)

Schistosoma japonicum

d)

Paragonimus westermani

18.

Which species of Schistosoma is most likely to be found in the liver sinusoids?

a)

S. haematobium

b)

S. mansoni

c)

S. japonicum

d)

S. intercalatum

19.

Which parasite is the most common cause of tapeworm infection in humans?

a)

Taenia solium

b)

Taenia saginata

c)

Diphyllobothrium latum

d)

Echinococcus granulosus

20.

Which fluke is responsible for the most widespread human infection globally?

a)

Clonorchis sinensis

b)

Fasciola hepatica

c)

Paragonimus westermani

d)

Schistosoma spp.

21.

What is the most common protozoan parasite causing intestinal infection worldwide?

a)

Entamoeba histolytica

b)

Cryptosporidium parvum

c)

Giardia lamblia

d)

Toxoplasma gondii

22.

Which parasite causes the most deadly vector-borne disease in humans?

a)

Trypanosoma cruzi

b)

Leishmania donovani

c)

Plasmodium falciparum

d)

Wuchereria bancrofti

23.

What is the most common helminth (worm) infection in humans worldwide?

a)

Hookworm

b)

Enterobius vermicularis

c)

Strongyloides stercoralis

d)

Ascaris lumbricoides

24.

Which of the following parasites is transmitted through freshwater snail larvae?

a)

Giardia lamblia

b)

Schistosoma spp.

c)

Taenia solium

d)

Trichinella spiralis

25.

Which parasite is most associated with undercooked pork and can cause neurocysticercosis?

a)

Taenia saginata

b)

Schistosoma mansoni

c)

Taenia solium

d)

Toxoplasma gondii

26.

How is Ascaris lumbricoides typically transmitted?

a)

Mosquito bite

b)

Inhalation of spores

c)

Fecal-oral route

d)

Skin penetration

27.

Which parasite is associated with contaminated water in hiking or camping settings?

a)

Entamoeba histolytica

b)

Giardia lamblia

c)

Trichomonas vaginalis

d)

Toxoplasma gondii

28.

Which mosquito is the vector for Plasmodium falciparum?

a)

Culex

b)

Aedes

c)

Anopheles

d)

Glossina

29.

Which parasite egg is lemon-shaped with bipolar plugs?

a)

Ascaris lumbricoides

b)

Trichuris trichiura

c)

Enterobius vermicularis

d)

Clonorchis sinensis

30.

What is the characteristic feature of Schistosoma haematobium eggs?

a)

Operculum with knob

b)

Lateral spine

c)

Terminal spine

d)

Bipolar plugs

31.

Which parasite has eggs that are D-shaped and best identified using the 'Scotch tape test'?

a)

Hookworm

b)

Trichuris trichiura

c)

Enterobius vermicularis

d)

Strongyloides stercoralis

32.

Which parasite has operculated eggs with a knob at the opposite end and is associated with B12 deficiency?

4 lines
33.

Which parasite has operculated eggs with a knob at the opposite end and is associated with B12 deficiency?

a)

Taenia saginata

b)

Diphyllobothrium latum

c)

Fasciola hepatica

d)

Schistosoma mansoni

34.

Strongyloides stercoralis is diagnosed by finding what in the stool?

a)

Operculated eggs

b)

Non-operculated eggs

c)

Cysts with 4 nuclei

d)

Rhabditiform larvae

35.

Which parasite's eggs are indistinguishable under the microscope, requiring proglottid or scolex ID?

a)

Diphyllobothrium latum

b)

Schistosoma japonicum

c)

Taenia spp.

d)

Clonorchis sinensis

36.

What parasite has a trophozoite with a 'face-like' appearance and causes foul-smelling diarrhea?

a)

Entamoeba histolytica

b)

Giardia lamblia

c)

Cryptosporidium parvum

d)

Balantidium coli

37.

Which of the following parasites produces non-operculated eggs with a thick, mammillated shell?

a)

Clonorchis sinensis

b)

Ascaris lumbricoides

c)

Paragonimus westermani

d)

Fasciola hepatica

38.

What diagnostic stain is used to identify Cryptosporidium parvum oocysts?

a)

Giemsa

b)

Acid-fast

c)

Trichrome

d)

Silver stain

39.

Which liver fluke has small, operculated eggs with shoulder-like thickening and an abopercular knob?

a)

Clonorchis sinensis

b)

Fasciola hepatica

c)

Paragonimus westermani

d)

Diphyllobothrium latum

40.

Which of the following is the diagnostic stage of Giardia lamblia?

a)

Embryonated egg

b)

Trophozoite and cyst in stool

c)

Miracidium

d)

Rhabditiform larva

41.

What is the infective stage of Schistosoma mansoni?

a)

Egg with lateral spine

b)

Adult fluke

c)

Cercariae released from snails

d)

Sporocyst

42.

What feature distinguishes Ascaris lumbricoides eggs from artifacts?

a)

Lateral spine

b)

D-shaped outline

c)

Presence of internal embryo and thick mammillated shell

d)

Operculum with knob

43.

Which of the following is commonly confused with Giardia cysts under microscopy?

a)

Diatoms

b)

Pollen and yeast cells

c)

Schistosome eggs

d)

Hookworm larvae

44.

Which parasite egg has a prominent lateral spine and is commonly found in stool samples?

a)

Schistosoma haematobium

b)

Diphyllobothrium latum

c)

Schistosoma mansoni

d)

Clonorchis sinensis

45.

Which artifact is often mistaken for Ascaris eggs due to its shape but lacks internal structure?

a)

Yeast

b)

Charcot-Leyden crystals

c)

Plant hairs

d)

Red blood cells

46.

What is the infective stage of Ascaris lumbricoides?

a)

Unembryonated egg

b)

Larva in the lungs

c)

Adult worm

d)

Embryonated egg containing L2 larva

47.

Which feature is most useful in distinguishing Schistosoma species by their eggs?

a)

Operculum shape

b)

Shell color

c)

Position of the spine (lateral vs. terminal)

d)

Internal fibrils

48.

Cryptosporidium parvum oocysts are best identified using which diagnostic method?

a)

Gram stain

b)

Giemsa stain

c)

Acid-fast stain

d)

Lugol’s iodine

49.

What is the main diagnostic challenge when identifying protozoan cysts in stool?

a)

They are acid-fast

b)

They move rapidly

c)

They are easily confused with fat globules and pollen

d)

They are only found in urine

50.

Which parasite can a vegetarian most likely get from unwashed vegetables or contaminated water?

a)

Taenia solium

b)

Giardia lamblia

c)

Trichinella spiralis

d)

Diphyllobothrium latum

51.

What is the infective stage of Ascaris lumbricoides for humans?

a)

Unembryonated egg

b)

Adult worm

c)

Embryonated egg (L2 larva inside)

d)

Larvae in lungs

52.

Which of the following parasites is transmitted via ingestion of encysted larvae in undercooked wild game?

a)

Trichinella spiralis

b)

Giardia lamblia

c)

Schistosoma mansoni

d)

Cryptosporidium parvum

53.

The infective stage of Plasmodium falciparum for humans is:

a)

Gametocyte

b)

Sporozoite

c)

Merozoite

d)

Trophozoite

54.

Which parasite is transmitted by skin penetration of free-swimming cercariae in freshwater?

a)

Taenia saginata

b)

Schistosoma spp.

c)

Cryptosporidium parvum

d)

Giardia lamblia

55.

What is the infective stage of Toxoplasma gondii in contaminated meat?

a)

Oocyst

b)

Sporozoite

c)

Tachyzoite

d)

Tissue cyst (bradyzoite)

56.

What is the infective stage of Wuchereria bancrofti for humans?

a)

Microfilariae

b)

Gametocyte

c)

Filariform larva (L3)

d)

Egg