What is the difference between sporozoites and merozoites

A sporozoite is the cell form that infects new hosts. A merozoite is the result of merogony that takes place within a host cell.

In Plasmodium, for example, the sporozoites are cells that produce in the mosquito's salivary glands, leave the mosquito during a blood meal, and drive liver cells (hepatocytes), where they generate. Cells infected with sporozoites ultimately burst, delivering merozoites into the bloodstream.  Merozoites are non-motile.A merozoite is a daughter cell of a protozoan parasite. Merozoites are the consequence of asexual propagation. Sporozoites are designed by sporogony, a type of sexual or asexual reproduction by multiple fission of a spore or zygote, representative of many sporozoans.

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.