| A | B |
| short buccal cavity | Strongyloides stercoralis |
| hookworm | Necator americanis or Ancylostoma duodenale |
| ovum has albumin covering | Ascaris lumbricoides |
| pinworm | Enterobius vermicularis |
| tape prep | Enterobius vermicularis |
| larvae has long buccal cavity | Necator americanis or Ancylostoma duodenale |
| egg has cleaving cells | Necator americanis or Ancylostoma duodenale |
| diagnostic stage is larvae in muscle | Trichinella spiralis |
| threadworm | Strongyloides stercoralis |
| larvae in soil penetrate skin | Necator americanis or Ancylostoma duodenale |
| barrel shape egg | Trichuris trichiura |
| whipworm | Trichuris trichiura |
| shell flat on one side | Enterobius vermicularis |
| Taenia proglottid with only 4 suckers | Taenia saginata |
| Taenia proglottid with crown of hooks plus suckers | Taenia solium |
| Taenia proglottid with few uterine branches | Taenia solium |
| Taenia proglottid with many uterine branches | Taenia saginata |
| microfilaria with spaced tail tip nuclei plus sheath | Brugia |
| microfilaria with sheath but no nuclei in tailtip | Wuchereria |
| microfilaria with no sheath or nuclei in tailtip | Onchocerca |
| microfilaria with nuclei in tailtip and sheath present | Loa loa |
| Causes elephantiasis | Wuchereria |
| Found in skin nodule | Onchocerca |
| dwarf tapeworm | Hymenolepis nana |
| large intestinal roundworm | Ascaris lumbricoides |
| ovum with hooklets and polar thickenings with filaments | Hymenolepis nana |
| striated egg | Taenia species |
| cysticercosis | Taenia solium |
| beef tapeworm | Taenia saginata |
| pork tapeworm | Taenia solium |
| broadfish tapeworm | Diphyllobothrium latum |
| wide oval egg with knob | Diphyllobothrium latum |
| largest fluke egg | Fasciola or Fasciolopsis |
| snail and uncooked water plant | Fasciola or Fasciolopsis |
| Chinese liver fluke | Clonorchis sinensis |
| snail and undercooked fish | Clonorchis sinensis |
| small egg with shoulders and knob | Clonorchis sinensis |
| Oriental lung fluke | Paragonimus westermani |
| sputum sample as well as stool | Paragonimus westermani |
| egg has shoulders and thick shell on other end | Paragonimus westermani |
| snail and undercooked crab or crayfish | Paragonimus westermani |
| blood flukes that live in veins | Schistosoma species |
| ovum has terminal spine | Schistosoma haematobium |
| egg has large lateral spine | Schistosoma mansoni |
| egg has small lateral spine | Schistosoma japonicum |
| eggs in urine from veins around bladder | Schistosoma haematobium |