Conoidasida

Description

A conoid is found in most species and when present forms complete but truncated cone.

Sexual and asexual reproduction are present in life cycle of all species. Each zygote normally forms an oocyst wall within which it undergoes meiosis. This is sometimes followed by mitosis. This process of sporogony produces mobile vermiform infectious sporozoites.

Multiple mitotic divisions (schizogony) also occur during merogony of the feeding stages (trophozoites) and during gametogony.

Motility

Microgametes of some species are flagellated. Locomotion of other gametes and any other motile stages is by gliding or body flexion. Some species possess pseudopodia but use them only in phagocytosis.