Are poriferans diploblastic

No, poriferans, or sponges, are not diploblastic; they are considered to be parazoa, lacking true tissues and organized germ layers. Unlike diploblastic organisms, which have two germ layers (ectoderm and endoderm), sponges have a simpler body structure with a loose aggregation of cells and a gelatinous matrix called mesohyl. This unique structure allows them to filter feed and perform essential functions without the complexities of tissue organization seen in more advanced animals.