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  • Sponge - Wikipedia
    Sponges are multicellular organisms consisting of jelly-like mesohyl sandwiched between two thin layers of cells, and usually have tube-like bodies full of pores and channels that allow water to circulate through them
  • What Are Sponges Made From? A Scientific Breakdown
    Explore the scientific composition of sponges Understand what makes up these unique animals, from cells to their unique support structures
  • What Are Sponges Made Out Of? From Cells to Skeleton
    Their chemical composition varies by species, consisting either of calcium carbonate (calcite) or amorphous silica (silicon dioxide) These mineralized structures are secreted by specialized cells within the mesohyl and form a supportive framework throughout the body
  • Sponge - Types, Size, Anatomy, Habitat, Diet, Lifespan, Life Cycle
    Around 400 species are glass sponges, and about 500 are calcareous, while all remaining species belong to the demosponges Members of every class except Calcarea possess silica-based spicules, whereas calcareous sponges have spicules made of calcium carbonate
  • Sponge - Skeletal Structure, Porifera, Spicules | Britannica
    The skeleton of sponges is of great taxonomic significance It may be mineral in nature (calcareous or siliceous) or composed of protein and other components (spongin)
  • Sponge Structure and Function - Advanced - CK-12 Foundation
    Sponges are diploblasts meaning that they develop from two basic germ layers: an ectoderm, or outer layer, and an endoderm, or inner layer Most sponges are asymmetric
  • Sponge Skeleton Composition: Types Functions [Bio-Engineering]
    Sponge skeleton composition is defined by three primary materials: calcium carbonate, silica (biological glass), or the fibrous protein spongin, which provide structural support and defense for the phylum Porifera
  • 28. 1A: Phylum Porifera - Biology LibreTexts
    Calcarea, Hexactinellida, Demospongiae, and Homoscleromorpha make up the four classes of sponges; each type is classified based on the presence or composition of its spicules or spongin
  • Sponge Science - I. CARE
    These ancient sponges had dense skeletons, but most modern sponges are softer-bodied with skeletons are made up of a meshwork of spicules and spongin fibers Spicules provide rigidity to the sponge, like the bones in our body, and are made of silica or calcium carbonate





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