_____________ and ____________ are included in the kingdom Protista. Describe the major characteristics regarding algae. True or false: All algae are pathogenic? Describe the major characteristics regarding protozoa. What are the three organs of locomotion for protozoa. Do all protozoa have a trophozoite stage? Do all protozoa produce cysts? What is the function of a protozoan cyst? True or false: All protozoa are pathogenic. Name at least four pathogenic protozoa and the disease name.