Question

sponge - shape of life
what is the phylum of sponges?
echinodermata
cnidaria
porifera
mollusca

Explanation:

Sponges are simple multicellular organisms. The phylum Porifera is characterized by having pores (ostia) through which water flows. Echinodermata includes starfish, sea urchins etc. Cnidaria has jellyfish, corals. Mollusca has snails, clams. Sponges fit in Porifera.

Answer:

Porifera