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115:, either by external or internal buds. The internal buds are called gemmules. Only endogenous types of buds develop into new sponges.
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and can survive conditions that would kill adult sponges. When the environment becomes less hostile, the gemmule resumes growing.
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This article is about the internal buds of freshwater sponges. For the proposed mechanism of heredity, see
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135:) and can lie around for long periods of time. Gemmules are analogous to a bacterium's
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United States: Holt, Rinehart, and
Winston. p. 695. Accessed on May 23, 2006.
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