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
Peripheral smear of malaria shows: 
Select and explain. 
A. Single ring form-Vivax, B. Multiple ring-Falciparum, C. Bar and band forms-Malariae, D. Oval form-Ovale
B: Multiple ring-Falciparum
Answer: B: Multiple ring-Falciparum 
Explanation: Ans. b. Multiple ring-FalciparumPLASMODIUM SPECIESSpeciesImportant featuresBlood smearsLiver stagesTreatmentVivax48-hour fever, spikesEnlarged host cells; ameboid trophozoitesPersistent hypnozoites RelapseChloroquine, then PrimaquineOvale (2 substrains)48-hour fever, spikesOval, jagged, infected RBCsPersistent hypnozoites RelapseChloroquine, then PrimaquinePlasmodium malariae72-hour fever spikes; recrudescenceBar and band forms; rosette schizontsNo persistent stage; recrudescenceChloroquine (no radical cure necessary)Plasmodium falciparumIrregular fever spikes; causes cerebral malariaMultiple ring forms crescent-shaped gametesNo persistent stage; recrudescenceChloroquine for susceptible, non-severe cases Atovaquone proguanil, artemetherlumefantrine, mefloquine for resistant, non-severe cases Quinine/quinidine for severe casesPlasmodium knowlesi24-hour fever spikesSimilar to P. malariaeNo persistent stageChloroquine