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Slime molds move, and lack chitin in their cell walls. They are now classified as belonging to the Kingdom Protista (Protoctista). Mycologists have studied them for so long that slime molds are still included in mycology textbooks.
The zygote then undergo numerous mitotic divisions to form the large, multinucleate plasmodium. This class is commonly referred to as the acellular slime molds because the plasmodium (Figs. 7-8) stage of the lifecycle is not composed of many cells. Instead it is essentially a single, multinucleate cell. As in the myxamoebae stage, the plasmodium is also an assimilative stage that consumes food by phagocytosis.