Gemmules are internal buds found in sponges and are involved in asexual reproduction.
It is an asexually reproduced mass of cells, that is capable of developing into a new organism i. Asexual reproduction in sponges occurs via buddingeither by external or internal buds.
The internal buds are called gemmules. Both types of buds develop into new sponges. Gemmules are resistant to desiccation drying outfreezing, and anoxia lack of oxygen and can lie around for long periods of time.
Gemmules are similar to a bacterium's endospore and are made up of amoebocytes surrounded by a layer of spicules and can survive conditions that would kill adult sponges.
When the environment becomes less hostile, the gemmule resumes growing.
From Wikipedia, the free encyclopedia. This article is about the internal buds of freshwater sponges. For the proposed mechanism of heredity, see Gemmule pangenesis.
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Asexual reproduction encompasses the forms of reproduction that involve Fungi and plants show Gemmulation asexual reproduction plants combination of sexual and asexual modes of reproduction. Gemmulation: It is the process of formation of an internal bud. Porifers (e.g. Spongilla) reproduce by formation of special internal buds called (A) plant portion is used as a means of propagation; (B) seed is used as a.