Sponges have a water based circulatory system, a combination of the natural flow of water around and through them, plus a kind of hydrodynamic suction, where a slightly faster flow of water at their top portions sucks water through from the bottom, plus the collective wriggling action of flagellated cells on the surface of their bodies which creates a water current through the pores of the sponge.
Gases dissolved in the water enter and leave the sponge cells by diffusion.
(see the links below for more information.)
No, they have no true tissues so they don't have a body cavity at all. And to have a complete digestive, system one needs two openings, a mouth and anus. Technically sponges have multiple pores and one osculum to eject waste, but that wouldn't qualify.
they use there little holes and than mush everything up and than spit it out in too the ocean :)
they don't have digestive systems but they can reproduce
If you are talking about sponges you clean with.
It's Not Alive.
So it Has No digestive System.
It Also Doesn't have Large Intestine.
So That's It.
same as a human
not true
It takes place inside the cells
its in side your butt
Exoskeleton
No sponges have skeletons.
saletal system
osteoporosis
different kind of joint
The skull belongs to the skeletal system.
Although sponges do not have a skeletal system they do have skeleton components that may be made of silicon or lime. A sponge is found in the ocean and is a hollow tube that has several large pores throughout it.
It is made for running , hunting or chasing.
shrimp!
The skeletal system itself is an organ system. Some schemes combine the skeletal system with the muscular system to make the musculoskeletal system.
The skeletal system are your bones.
skeletal system* bones. :)
the skeletal system is a system in the body .