No sponges lack organized multicellular organs, such as nerves and muscles.
nutrition and oxygen
No Sponges dont move in water....! (:
they dont.
because if they dont they not hold somthing
all sponges dont have teeth, so they eat small plankton.
sponges are made up of individual cells. I dont know about colentrates. They just are what they are. sponges also don't move while coelenterates do.
Yes, they just digest it like anyone would.
they dont everything living has a heart
i dont think i know ... :P
no they dont... animals have muscles
Because sponges have seawater to carry nutrients and waste.