This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Parasitology, Subject name: Microbiology
Amastigote form is seen in- 
Select and explain. 
A. Leishmania, B. Plasmodium, C. Babesia, D. Ascaris
A: Leishmania
Answer: A: Leishmania 
Explanation: Ans. is 'a' i.e., Leishmania o Leshmania are hemoflagellates which occur in two formsAmastigote (aflagellar stage) : It occurs in RE system (reticuloendothelial system) of vertebrates (Man, dog).Promastigote (flagellar stage) : It is infective farm and occurs in gut of sandfly or in artificial cultures,o Promastigote form is transmitted by sandfly (vector is female sand fly).Types of LeishmaniasisCausative agentVector (sandflies)o Visceral leishmaniasis (Kala-azar)Leishmania donovaniPhlebotomus argentipeso Cutaneous leishmaniasis Phtebotomus papatasi & phlebotomus sergentii) Oriental soreii) Muco-cutaneous leishmaniasisLeishmania tropicaLeishmania braziliensis