This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
The cystic form of all are seen in man except ? 
Select and explain. 
A. E.histolytica, B. Giardia, C. Trichomonas, D. Toxoplasma
C: Trichomonas
Answer: C: Trichomonas 
Explanation: Ans. is 'c' i.e., Trichomonas Protozoal parasites have two phases. Cystic phase Trophozoite Cystic phase is not seen in : Trichomonas Entamoeba gingivalis Dientamoeba fragilis