bone marrow
Sponges have no proper body cavity or coelom. However, in the everyday sense of the expression, there is a cavity inside sponges, which is called a spongocoel.
nooo.
No, porifera, or sponges, do not have a true body cavity. They are classified as acoelomates, meaning they lack a coelom or any organized body cavity. Instead, their bodies are composed of a simple structure with a porous body wall and a central cavity called the spongocoel, through which water flows for feeding and respiration.
The sponges are Acoelomates. That is they don't have coelom or body cavity.
sponges have central cavity and sea anemone have gastravascular cavity
ostia
A cavity that houses body organs is called a body cavity. The main body cavities are the thoracic cavity, abdominal cavity, and pelvic cavity, which contain organs such as the heart, lungs, stomach, and intestines.
Baby sponges are simply referred to as larva. At the larva stage, they swim around in the water, but full grown sponges attach themselves to reefs and don't swim or move around.
No. A sponge is asymmetrical, because it lacks any organised body plan. Animals with radial body symmetry display a regular arrangement of body parts around a central axis, usually in a circular pattern. jellyfish, for example, have radial body symmetry.
The cavity surrounded by the hip bone is called what?
It is the mantle.
yes, I think it's called coelom. An organism with a true body cavity is called a eucoelomate. This means that the body cavity exists between the inner layer of mesoderm and the outer layer of mesoderm. A pseudocelomate kind of has a body cavity but it is the space between the endoderm and mesoderm. This is not a true body cavity because it is not mesoderm on mesoderm.