PHYLUM PORIFERA
The phylum porifera contains aquatic invertabrates. These animals are called sponges. Sponges do not have a real circulatory system. It is a water based circulatory system. They get oxygen throughout their body by the movement of water through pores. Three typesof animals in phylum porifera are:
Red Tube Sponge
The Red Tube Sponge is found in aquatic environments. It has long tubes extending out from one part of the body that attaches to rock. The Red Tube sponge does not have a true circulatory system. It gets nutrients thorughout its body by the water moving in and out of pores. It takes in oxygen and other nutrients that the water carries, and it gives waste when the water flows out. This sponge has flagellum that create a current of water in the sponge. This helps with the diffusion of oxygen and nutrients.
Stovepipe Sponge
The stove pipe sponge has long tube like sponges extending out. One of these
tubes can grow to be five feet long. This sponge does not have a real
circulatory just as all other sponges do not. The stove pipe sponge gets
oxygen by water flowing through pores, and it gets rid of nitrogenous waste when
the water exits. The stove pipe sponge has a central cavity where water goes
after it enters through pores. Flagellum located in this cavity and they move to
create a current of water going through a hole at the top of the sponge called a
osculum. The stove pipe sponge is found in the Atlantic ocean by the
Carribean.
tubes can grow to be five feet long. This sponge does not have a real
circulatory just as all other sponges do not. The stove pipe sponge gets
oxygen by water flowing through pores, and it gets rid of nitrogenous waste when
the water exits. The stove pipe sponge has a central cavity where water goes
after it enters through pores. Flagellum located in this cavity and they move to
create a current of water going through a hole at the top of the sponge called a
osculum. The stove pipe sponge is found in the Atlantic ocean by the
Carribean.
Barrel Sponge
The Barrel Sponge is one of the largest types of Sponge. It is found in the Caribbean. The Circulatory System here is water based just as all the other sponges are. Nutrients are carried through the water coming in, and waste is expelled when the water exits. The flow of water is created by the flagellum moving. The speed can be controlled by the rate the flagellum move at and how open the sponge is at the top.