Answer:
b. false
Step-by-step explanation:
Sponges are simple multicellular organisms without forming tissues but have an aggregate cellular level of body organization. They are included in the phylum Porifera, meaning they are pore bearing organisms. Sponges are acoelomate animals but have spongocoel. The sponges are diploblastic, animals derived from two embryonic germ layers; ectoderm and endoderm. The outer dermal layer and inner gastral layer. In between these two layers, there is a gelatinous and non-cellular mesoglea containing numerous free amoeboid cells.