![]() ![]() ![]() Osculum – A large hole at the top of the sponge Spicule – spike-shaped structure made of chalklike calcium carbonate or glasslike silica Amoebocyte – move around within the walls of the sponge and carry food to other cells Softer sponges have an internal skeleton made of spongin, a network of flexible protein fibers. Water leaves thru the osculumĥ Porifera: Structure Specialized cells of sponges:Ĭollar cells or choanocytes – Use flagella to move a study current of water through the sponge. Water flow Collar cells or choanocytes (koh-an-uh-sytz) are cells that use flagella to move a steady current of water through the sponge. Sponges are multicellular, heterotrophic, have no cell walls and contain only a few specialized cells. Sponges are placed in the phylum Porifera (poh-RIF-ur-uh) which means “pore-bearers.” Sponges have tiny openings, or pores, all over their bodies Sponges are sessile, meaning that they live their entire adult life They have irregular symmetryĤ Porifera Why are sponges considered animals? Most sponges live in the ocean Arctic to the tropics shallow water to depths of several hundred meters They are dry sponges were use for Bathing Cleaning 1 Phylum Porifera Sponges Porifera “paw-rif-er-uh” CnidariansĢ Porifera Sponges Living on Earth for at least 540 million years ![]()
0 Comments
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |