Body Forms
There are three types of sponge body forms: ascon, sycon, and leucon.
Ascon sponges are the simplest and least common sponge body from. These sponges have multiple ostia, this is where water enters the sponge, and only have one osculum, where water exits the sponge. The openings lead to the sponge's one central chamber called a spongocoel that is lined with choanocytes. They are vaselike in shape.
Sycon sponges are are more complex than ascon sponges but are simpler than leucon sponges. These sponges have multiple dermal pores, where water enters the sponge, and only have one osculum. The openings lead to radial canals that are lined with choanocytes and after they lead to the spongocoel. They have folded walls thay have incurrent canals.
Leucon sponges are the most complex of the sponge body forms and also most common. These sponges have multiple dermal pores and can have more than one osculum. The openings lead to canals that lead to chambers that are lined with choanocytes and then to the excurrent canal. They have branched canal systems that lead to chambers.
Ascon sponges are the simplest and least common sponge body from. These sponges have multiple ostia, this is where water enters the sponge, and only have one osculum, where water exits the sponge. The openings lead to the sponge's one central chamber called a spongocoel that is lined with choanocytes. They are vaselike in shape.
Sycon sponges are are more complex than ascon sponges but are simpler than leucon sponges. These sponges have multiple dermal pores, where water enters the sponge, and only have one osculum. The openings lead to radial canals that are lined with choanocytes and after they lead to the spongocoel. They have folded walls thay have incurrent canals.
Leucon sponges are the most complex of the sponge body forms and also most common. These sponges have multiple dermal pores and can have more than one osculum. The openings lead to canals that lead to chambers that are lined with choanocytes and then to the excurrent canal. They have branched canal systems that lead to chambers.