Nematodes A class of unsegmented helminths with fundamental bilateral symmetry. Many species are parasites.
1 Parazoa – Phylum Porifera Sponges Loosely organized and lack tissues Multicellular with several types of cells 8,000 species mostly marine Adults sessile,
Animal Taxonomy. Systematic Position Kingdom :Protista Phylum : Sarcomastigophora Subphylum : Mastigophora Class : Zoomastigophora Genus : : Trypanosoma.
How do the acoelomates fit in? Porifera unknown common ancestor Cnidaria triploblastic organ level of organization Platyhelminthes protonephridia cephalization.
The Ecdysozoa The Ecdysozoa include the following phyla: Arthropoda, Onychophora, Tardigrada, Kinorhyncha, Priapulida, Loricifera, Nematoda and Nematomorpha.
Nematodes and Soil Ecology Management of Plant-parasitic Nematodes in Vineyards
Freshwater Animals