spongin and spicules are the sponges body support and defence
1. spicules (calcium carbonate or silica) 2. spongin (protein)
Spongin provides structural support in certain marine sponges by forming a flexible, protein-based skeleton. Spicules are tiny, needle-like structures made of calcium carbonate or silica that also provide structural support and protection in sponges, as well as help deter predators.
No, spongin is made of a scleroprotein and not silica spicules. Silica spicules are found in the skeletal structure of some sponges, providing structural support. Spongin is a fibrous protein that also helps provide structural support to certain types of sponges.
Spongin and spicules are the sponges body support and defence. They both cover a sponge, and if a predator eats it it will be hurt. It will be hard to eat it, because of the sharpness and roughness of the outside. Well at least in the spicules case.
Spongin and spicules are the sponges body support and defence. They both cover a sponge, and if a predator eats it it will be hurt. It will be hard to eat it, because of the sharpness and roughness of the outside. Well at least in the spicules case.
Sponges don't have skeletons! They are invertebrates which means the creature doesn't have a backbone, but in this case, it doesn't have a skeleton! (I think this is right, I apologize if it isn't)
A network of spongin or spicules.
The class of the mermaid's glove sponge is Demospongiae, which is the largest and most diverse class of sponges. They are characterized by having a skeleton made of spongin fibers or siliceous spicules.
Sponges have different types of spicules that provide support to their bodies. These can be made of calcium carbonate, silica, or spongin. Calcium carbonate spicules are needle-like and provide rigidity, while silica spicules are more delicate and form intricate structures. Spongin spicules are organic fibers that give flexibility to the sponge's body.
In calcarea spicules are calcareous, in hexactinellida spicules are silicious and hexa radiated, in demospongiae spicules are absent but spongin fibres are present. that's why demosponges are used as bathroom sponges
The Demospongiae are the largest class in the phylum Porifera. Their "skeletons" are made of spicules consisting of fibers of the protein spongin, the mineral silica, or both. They contain 90% of all species of sponges.