Has 2 Cell Layers
A sponge's defenses are spikes in the sponges body.
Sponges protect themselves with spikes in their body.
Sponges
desribe how sponges carry out essential functions
nooo.
Ostia
sponges have no cells which means no tissues and that means no organs because of what the cycle is there would not be any organs in the body of a sponge
It has two cell layers.
Sponges have a single body cavity known as the spongocoel . The spongocoel is critical to the food gathering strategy of sponges.
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.
spongin and spicules are the sponges body support and defence
Everything that a human body has. Guessing?!