Demosponge members can be easily distinguished from Hexactinellid members because they do not have a 6-wire spicule. They have a leuconoid structure with a folded choanoderm. The pinacoder is continuous and the mesohyl is characteristically thick.
What are the four characteristics of sponges?
General characteristics of sponges: Habitat: Advertising :. Body shape: Those bodies are porous, that is, they have pores. .. Symmetry: Most sponges are asymmetric. .. Germ :. Organizational level :. Body wall :. Canal system :. Skeleton (figure sponge: characters and classification
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