![]() The water goes out through a big tube in the center. All sponges take in water through pores (little holes) in their bodies. ![]() There are more than 10,000 species of sponge. Most of them feed on bacteria and other microorganisms. ![]() Their bodies are full of pores and channels allowing water to circulate through them. The basic body plan is a jelly-like layer sandwiched between two thin layers of cells. Nevertheless, sponges are quite successful. A sponge is an animal that grows in one spot like most plants do. It is sessile: it cannot move from place to place the way most animals can. It is a simple animal with many cells, but no mouth, muscles, heart or brain. A sponge is a member of the phylum Porifera.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |