The body of the sponge is hollow, a jelly-like substance whose main component is collagen, and is kept in shape by glue reinforced by a dense network of fibers also made of collagen. The inner surface is covered with choanocytes, cells with a cylindrical or conical collar that surrounds one belly for each choanocyte.
What is the support structure of the sponge?
As we have seen, most sponges are supported by small bone-like spicules of mesohyl (usually small pointed structures made of calcium carbonate or silica). .. The spicules support the sponge's body and may also prevent predation.
What structure gives the sponge its shape?
Sponge spicules are the fine structure of hard crystalline material with a fantastic shape peculiar to various types of sponges. They are part of the skeleton that helps give the sponge its shape.
Below you will find two helpful answers on a similar topic. đ
What are the characteristics of a wild rabbit?Why do rabbits make good pets?