Protozoa: Amoebae, Ciliates and Flagellates
- Previous year questions on Protozoa: Amoebae, Ciliates and Flagellates for NEET PG (National Eligibility cum Entrance Test - Postgraduate), from the Microbiology section of the exam.
- Most questions here come from previous-year papers of Indian postgraduate medical entrance and licensing exams; where a paper and year are recorded the question carries them. The image-based questions are original vignettes written around an openly licensed figure, and were never asked in any exam.
- 87 live questions in Protozoa: Amoebae, Ciliates and Flagellates.
- 5 of 87 questions carry a verified exam year: 2017, 2019.
- Microbiology is worth about 20 of 300 questions on the exam. See every subject’s weightage.
- Question set last updated 6 Sept 2026.
Q1.An anxious mother brought her 4 yr old daughter to the pediatrician. The girl was passing loose stools past 20 days. This was often associated with pain abdomen. Stool examination showed the causative organism:
- AEntamoeba histolytica
- BGiardia lamblia✓ Correct answer
- CCryptosporidium parvum
- DE. coli
Q2.Trichomoniasis is transmitted through which stage:
- ACyst
- BOocyst
- CSporozoite
- DTrophozoite✓ Correct answer
Q3.Duodenal aspirate is used in diagnosis of:
- AE histolytica
- BGiardia lamblia✓ Correct answer
- CTaenia solium
- DLeishmania
Q4.Winter bottom sign is seen in:
- AToxoplasmosis
- BTrypanosomiasis✓ Correct answer
- CCryptosporidiosis
- DLeishmaniasis
Q5.The most sensitive method to detect LD bodies is
- ABone marrow aspiration
- BSplenic aspiration✓ Correct answer
- CPeripheral blood smear
- DLymph node biopsy
Q6.Flask shaped ulcers in colon is caused by:-
- AGiardia lamblia
- BEntamoeba histolytica✓ Correct answer
- CH. Pylori
- DEnterobius vermicularis
Q7.Naegleria fowleri is commonly acquired by?
- ASalt water living
- BFresh water living✓ Correct answer
- CSulfur springs
- DSwimming pool
Q8.Ingested RBCs (Erythrophagy) seen in:
- ANaegleria fowleri
- BEntamoeba histolytica✓ Correct answer
- CEntamoeba coli
- DAcanthamoeba
Q9.Flask shaped ulcers intestine caused by which of the following?
- ATyphoid
- BTB
- CEntamoeba histolytica✓ Correct answer
- DGiardia
Q10.Mild steatorrhea is caused by-
- ATrichmonas vaginalis
- BGiardia✓ Correct answer
- CE. histolytica
- DEntamoeba coli
Answer key
Q1: B. Giardia lamblia; Q2: D. Trophozoite; Q3: B. Giardia lamblia; Q4: B. Trypanosomiasis; Q5: B. Splenic aspiration; Q6: B. Entamoeba histolytica; Q7: B. Fresh water living; Q8: B. Entamoeba histolytica; Q9: C. Entamoeba histolytica; Q10: B. Giardia.
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