Two or more phyla of slime molds are recognized. Most of the species have typical plasmodia and follow the patterns just discussed. About two dozen species of cellular slime molds are, however, evidently not closely related to the other slime molds. Individual amoebalike cells of cellular slime molds feed independently, dividing and producing separate new cells from time to time. When the population reaches a certain size, they stop feeding and clump together, forming a mass called a pseudoplasmodium. The pseudoplasmodium resembles and crawls like a garden slug. It eventually becomes stationary and is transformed into a sporangium-like mass of spores.
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This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.