It is called the osculum.
No in fact they have multiple openings called pores, which allow water and nutrients to flow in and out of the sponge
No. Sponges have their own phylum called Porifera.
porifera are also called sponges some of the sponges are euplectelia spongilla and sycon
osculum - a large opening in a sponge through which water flows out of the sponge. Sponges may have more than one oscula.
The holes in sponges are called pores. These pores help sponges to filter water and capture food particles for nourishment.
A digestive system with only one opening is called an incomplete digestive tract. Organisms with this type of digestive system ingest food and eject waste through their mouth.
They usually live at the bottom of an ocean on the ocean floor or any hard, stable surface in the ocean. Sponges are filter feeders and have pores all over their bodies. They are hollow inside and have an opening on the top. They have some cells called 'jelly-like cells'. Hope this info is useful!:)
Spicules
bone marrow
it has no muscles thats how it can function
No sponges arent mollusks. Mullusks are in their own phylum 'mollusca' and spongers are a part of their own phylum called 'porifera'
inhalation!