Sponges
Phylum: Porifera
Class: Calcarea
Class: Hexactinellida
Class: Demospongia
References
Basic information
Means "pore bearer"
About 5000 known species across the world.
Can reproduce both sexually and asexually.
Simplest form of cellular organization.
Sponges do not have a distinct digestive system. They receive their food by a process called "Filter-feeding". Which means they take in water and filter out the food particles within it.
Sponges are Bilaterally symmetrical.
Basic sponge structure
Sponge Classes
Calcarea
Hexactinellida
Demosponge