This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable Diseases, Subject name: Social & Preventive Medicine
Organism multiplying and developing in the hosts is called as 
Select and explain. 
A. Cyclopropagative, B. Cyclodevelopmental, C. Developmental, D. All
A: Cyclopropagative
Answer: A: Cyclopropagative 
Explanation: Ans. a (Cyclopropagative).(Ref. Park, PSM, 17th/pg.543)BIOLOGIC TRANSMISSIONTypeDefinitionE-g.PropagativeDisease agent undergoes no cyclical change, but multiplies in the body of the vector,Plague bacillus (rat flea)Cyclo-propagativeDisease agent undergoes cyclical change and multiplies in the body of the vector.Malarial parasite (Anopheline mosquito)Cyclo-developmentalDisease agent undergoes cyclical change, but does not multiply in the body of the vector,Filarial parasite (culex mosquito),Guineaworm (cyclops)