(a) the disease is Malaria.
(b) the pathogen is plasmodium. there are 5 species of plasmodium which causes malaria. they are :
1. plasmodium falciparum
2. plasmodium vivax
3. plasmodium ovale
4. plasmodium malariae
5. plasmodium knowlesi
(c) the breakdown of RBC and release of more merozoites causes periodic fever in malaria.
(d) the diagram is given below. please refer it.....