Demospongiae
The largest class of sponges is Demospongiae, which includes over 90% of all known sponge species. Their body type is typically characterized by a leuconoid structure, which consists of a complex network of canals and chambers that allows for efficient water flow and filtration.
Sponges have a single body cavity known as the spongocoel . The spongocoel is critical to the food gathering strategy of sponges.
sponges
neurons aka nerve cells
Most sponges of the Demospongiae type are considered asymetrical. (Not having symmetry.)
The sponges.
Sponges have a single body cavity known as the spongocoel . The spongocoel is critical to the food gathering strategy of sponges.
an asymmetrical body plan
A network of spongin or spicules.
There are four classes of sponges classified so far. The classification is based on the difference in basic cell structure and type. They are,Calcarea - has single nuclues and single external membrane.Glass Sponges - has multinucleated cell.Demosponges - same as calcerea but their spicules are made of silica whereas for Calcarea it is made of calcite.Homoscleromorpha - same as Demosponges except for the different body structure it has. It is the most recently classified class.
The largest type of intrusion is the pluton.
sponges -apex
Arteries, of which the aorta is the largest vessel in the human body.
The third class lever is the most common lever in the body.
Ostia
Hexactinellida, Calcarea, Demospongiae, andSclerospongiaeTechnically, however, the Sclerospongiae are not considered sponges. They are very similar, but they are not the same. Like bats and birds who have both evolved the ability to fly but are not the same types of animals, Slerospongiae have evolved and became very similar to sponges, but they are not sponges.
bendy skin
sponges