Several species of Monocystis are parasitic in the seminal vesicles of the earthworm. They belong to the class Sporozoa and are placed in the order Gregarinida. http://www.microscopy-uk.org.uk/mag/indexmag.html?http://www.microscopy-uk.org.uk/mag/artmar99/cystis.html
Aerobic organism - All mammals, most plants.Anaerobic organism - Yeast , Monocystis .
Multiple fission is the process of division of parent into many small daughter individuals simultaneously.Examples- plasmodium ,amoeba ,monocystis and foraminifera.