Sponge spicule — Sponge spicules Spicules are structural elements found in most sponges. They provide structural support and deter predators. Large spicules, visible to the naked eye are referred to as megascleres, while smaller, microscopic ones are termed… … Wikipedia
Sponge — This article is about the aquatic animal. For the porous cleaning tool, see Sponge (material). For other uses, see Sponge (disambiguation). Sponge Temporal range: Ediacaran–Recent … Wikipedia
sponge — spongeless, adj. spongelike, adj. spongingly, adv. /spunj/, n., v., sponged, sponging. n. 1. any aquatic, chiefly marine animal of the phylum Porifera, having a porous structure and usually a horny, siliceous or calcareous internal skeleton or… … Universalium
Freshwater environmental quality parameters — are the natural and man made chemical, biological and microbiological characteristics of rivers, lakes and ground waters, the ways they are measured and the ways that they change. The values or concentrations attributed to such parameters can be… … Wikipedia
siliceous sponge — ▪ sponge any sponge in which the main skeletal component is silica as opposed to calcium carbonate or fibrous organic materials only. More than 95 percent of all known sponge species have a siliceous skeleton and belong to the class… … Universalium
Polymastia (sponge) — Taxobox name = Polymastia regnum = Animalia phylum = Porifera classis = Demospongiae ordo = Hadromerida familia = Polymastiidae genus = Polymastia genus authority = Bowerbank, 1863 subdivision ranks = Species subdivision = see text Polymastia is… … Wikipedia
Spongilla — sponge genus that includes the freshwater sponge (q.v.) species. * * * … Universalium
Spongilla argyrosperma — Taxobox name = Freshwater sponge (North America) image caption = regnum = Animalia phylum = Porifera classis = Demospongiae ordo = Haplosclerida subordo = Spongillina familia = Spongillidae genus = Spongilla species = S. argyrosperma binomial =… … Wikipedia
Spongilla — Taxobox image width = 250px image caption = Spongilla lacustris found in the Hanford Reach of the Columbia River, Washington, USA. name = Spongilla regnum = Animalia phylum = Porifera classis = Demospongiae classis authority = Sollas, 1885 ordo … Wikipedia
Ceramics of indigenous peoples of the Americas — Moche portrait vessel, Musée du quai Branly, ca. 100 700 CE, 16 x 29 x 22 cm … Wikipedia
