What are the main features that separate organisms into phylum sporozoa?

Answer 1

Phylum Apicomplexa is used now instead of sporozoa. All apicomplexans are parasites. In typical parasite fashion, most have complicated life cycles, often with two different hosts. The phylum name is named for the "apical complex" found on the end of the motile stage used to enter the host. The basic life cycle may be said to start when an infective stage, or sporozoite, enters a host cell, and then divides repeatedly to form numerous merozoites. Some of the merozoites transform into sexually reproductive cells, or gamonts. Gamonts join together in pairs and form a gamontocyst. Within the gamontocyst, the gamonts divide to form numerous gametes. Pairs of gametes then fuse to form zygotes, which give rise by meiosis to new sporozoites, and the cycle begins again. Human malaria is caused by four species of Plasmodium.

Answer 2

Organisms in the phylum Sporozoa are characterized by being parasitic, having complex life cycles involving multiple hosts, and producing spores (sporozoites) for transmission. They lack typical locomotor structures like cilia or flagella and often have specialized organelles for host cell invasion and nutrient uptake. Their life cycles commonly involve sexual and asexual stages, with some species causing diseases in humans and other animals.