![]() ![]() Here, the ectoderm makes up the outer layer while the endoderm makes up the inner layer. As such, their bodies are made up of two basic germ layers (the ectoderm and the endoderm). * Like Cnidarians, sponges are diploblasts. * The bodies of phylum Porifera species are also characterized by pores and canal systems. Also, some are not highly branched and have a vase-like form. Like some polyps, the majority of Porifera species grow upright and thus resemble a branching tree. However, some can grow to be over 6 feet tall and are easily recognizable. Most are also small in size (a few centimeters) with varying shapes (tube-shaped, branched, etc). However, some of the species display radial symmetry. This is mostly the result of continuous morphogenesis. Unlike most animals, the majority of sponges are asymmetrical. As mentioned, members of the phylum Porifera known as sponges are simple organisms. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |