Question

The adult are sessile while larvae are motile in the members of the phylum​

Answer 1

Answer:

28.1A: Phylum Porifera. Sponges lack true tissues, have no body symmetry, and are sessile; types are classified based on presence and composition of spicules.this means they spend their entire adult life attached to a single spot. why are sponges classified as animals. because they are multicellular, heterotrophic, have no cell walls and contain a few specialized cells.Advantage of sessile animal producing free-swimming larvae? To spread and not be concentrated in just one area. Advantage of reproducing asexually by budding? Forms sessile clusters from their base.