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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.
Cellular Slime Molds. As mentioned above, the vegetative phase of the cellular slime molds is an ameboid cell. Depending on environmental conditions, these cells will enter either the sexual or the asexual reproductive phase. For sexual reproduction, two cells of opposite mating types fuse to create a diploid cell.