Definition of spongin in English:
noun[mass noun] Biochemistry
The horny or fibrous substance found in the skeleton of many sponges.
- Demospongea are the dominant modern group with 600 genera; they have a skeleton formed of spongin or silica, or a mixture of the two.
- Some spicules are formed of the mineralized substances calcium carbonate and silica, while others are made of an organic substance called spongin.
- First of all, however, spongin is not a feature consistent of all Porifera, but may be a constituent character of the Demospongiae only.
Definition of spongin in:
- US English dictionary
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