11. Trophozoites then mature to schizonts which divide several times to produce new merozoites.12. The influence of trophozoites on the morphology of infected erythrocytes is not marked. 13. The trophozoites are round, have a large vacuole and a large nucleus. 14. Each trophozoite gives rise to 12-36 ( average 24 ) merozoites. 15. Older trophozoites are compact, rounded or oval and display very little amoeboidity. 16. The sporozoites increase in size and develop into trophozoites . 17. The trophozoites are large, band like and wide. 18. Elongated trophozoites stretching across the erythrocyte, called band forms, are sometimes observed. 19. These species have reduced trophozoites and tend to infect tissues other than the intestine. 20. While it is feeding and growing, the cell is known as a trophozoite .