Sponge Develoment

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The sponge, a many celled animal, begins its life as a single-cell, the egg. The continued division of its cells result in the formation of a hollow globe of cells called the blastula, similar to Volvox, and at this point the young larva leaves the parent.




Winchell, Alexander Sketches of Creation (New York, NY: Harper & Brothers, 1870)


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