PARASITOLOGY LAB PRACTICAL #2
(STUDY GUIDE 2026/2027 COMPLETE
QUESTIONS WITH VERIFIED CORRECT
ANSWERS || 100% GUARANTEED PASS
NEWEST VERSION)
Description:
This study guide contains 100 multiple-choice questions based on the organisms and structures
listed in your lab practical content: Toxocara spp., Necator americanus, Ancylostoma duodenale,
Ascaris lumbricoides, Trichuris trichiura, Enterobius vermicularis, and Trichinella spiralis. The
correct answer in each question is marked with ✅✅✅. For the muscle-larva items, standard
parasitology identification is followed.
Keywords:
Parasitology, Lab Practical, Toxocara spp., Necator americanus, Ancylostoma duodenale,
hookworm eggs, infective larvae L3, copulatory bursa, Ascaris lumbricoides, Trichuris trichiura,
Enterobius vermicularis, Trichinella spiralis, nurse cell, MCQs, study guide
QUESTIONS
1. Toxocara spp. egg is best described as:
A. Thin-shelled and oval
B. D-shaped and colorless
C. Thick-shelled with a pitted outer surface ✅✅✅
D. Barrel-shaped with bipolar plugs
2. The outer surface of a Toxocara egg is:
A. Smooth and transparent
B. Mammillated
C. Pitted or finely sculptured ✅✅✅
D. Flattened on one side
3. Toxocara spp. eggs are usually:
A. Colorless and asymmetrical
B. Brownish and subspherical ✅✅✅
C. Elongated with plugs
D. Segmented with blastomeres
4. Which feature helps distinguish Toxocara eggs from hookworm eggs?
A. Presence of blastomeres
, B. Thin shell
C. Thick pitted shell ✅✅✅
D. Oval transparent wall
5. The infective stage of Toxocara spp. for humans is:
A. Rhabditiform larva
B. Filariform larva
C. Embryonated egg containing larva ✅✅✅
D. Adult worm
6. Eggs of Necator americanus are typically:
A. D-shaped
B. Thin-shelled, oval, and segmented ✅✅✅
C. Thick-shelled and mammillated
D. Round with pitted surface
7. Eggs of Ancylostoma duodenale are typically:
A. Barrel-shaped with polar plugs
B. Oval, thin-shelled, and segmented ✅✅✅
C. D-shaped and colorless
D. Thick-shelled and brown with pits
8. The eggs of Necator americanus and Ancylostoma duodenale are:
A. Easily distinguished in stool
B. Completely different in shape
C. Morphologically very similar or indistinguishable ✅✅✅
D. D-shaped in both species
9. The infective larval stage of Necator americanus is:
A. L1 rhabditiform larva
B. L2 larva
C. L3 filariform larva ✅✅✅
D. Encysted muscle larva
10. The infective L3 larva of hookworms is also called:
A. Rhabditiform larva
B. Filariform larva ✅✅✅
C. Cercaria
D. Metacercaria
11. Human infection with Necator americanus most commonly occurs through:
A. Ingestion of cysts
B. Skin penetration by L3 larvae ✅✅✅
C. Mosquito bite
D. Inhalation of eggs
(STUDY GUIDE 2026/2027 COMPLETE
QUESTIONS WITH VERIFIED CORRECT
ANSWERS || 100% GUARANTEED PASS
NEWEST VERSION)
Description:
This study guide contains 100 multiple-choice questions based on the organisms and structures
listed in your lab practical content: Toxocara spp., Necator americanus, Ancylostoma duodenale,
Ascaris lumbricoides, Trichuris trichiura, Enterobius vermicularis, and Trichinella spiralis. The
correct answer in each question is marked with ✅✅✅. For the muscle-larva items, standard
parasitology identification is followed.
Keywords:
Parasitology, Lab Practical, Toxocara spp., Necator americanus, Ancylostoma duodenale,
hookworm eggs, infective larvae L3, copulatory bursa, Ascaris lumbricoides, Trichuris trichiura,
Enterobius vermicularis, Trichinella spiralis, nurse cell, MCQs, study guide
QUESTIONS
1. Toxocara spp. egg is best described as:
A. Thin-shelled and oval
B. D-shaped and colorless
C. Thick-shelled with a pitted outer surface ✅✅✅
D. Barrel-shaped with bipolar plugs
2. The outer surface of a Toxocara egg is:
A. Smooth and transparent
B. Mammillated
C. Pitted or finely sculptured ✅✅✅
D. Flattened on one side
3. Toxocara spp. eggs are usually:
A. Colorless and asymmetrical
B. Brownish and subspherical ✅✅✅
C. Elongated with plugs
D. Segmented with blastomeres
4. Which feature helps distinguish Toxocara eggs from hookworm eggs?
A. Presence of blastomeres
, B. Thin shell
C. Thick pitted shell ✅✅✅
D. Oval transparent wall
5. The infective stage of Toxocara spp. for humans is:
A. Rhabditiform larva
B. Filariform larva
C. Embryonated egg containing larva ✅✅✅
D. Adult worm
6. Eggs of Necator americanus are typically:
A. D-shaped
B. Thin-shelled, oval, and segmented ✅✅✅
C. Thick-shelled and mammillated
D. Round with pitted surface
7. Eggs of Ancylostoma duodenale are typically:
A. Barrel-shaped with polar plugs
B. Oval, thin-shelled, and segmented ✅✅✅
C. D-shaped and colorless
D. Thick-shelled and brown with pits
8. The eggs of Necator americanus and Ancylostoma duodenale are:
A. Easily distinguished in stool
B. Completely different in shape
C. Morphologically very similar or indistinguishable ✅✅✅
D. D-shaped in both species
9. The infective larval stage of Necator americanus is:
A. L1 rhabditiform larva
B. L2 larva
C. L3 filariform larva ✅✅✅
D. Encysted muscle larva
10. The infective L3 larva of hookworms is also called:
A. Rhabditiform larva
B. Filariform larva ✅✅✅
C. Cercaria
D. Metacercaria
11. Human infection with Necator americanus most commonly occurs through:
A. Ingestion of cysts
B. Skin penetration by L3 larvae ✅✅✅
C. Mosquito bite
D. Inhalation of eggs
