BIOL 125 Study Guide - Midterm Guide: Craniate, Sea Urchin, Centipede
27 Apr 2017
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Phylum cnidaria: class hydrozoa, solitary or colonial, examples: hydra, oblelia, potuguese man o" war, class anthozoa, colonial, corals and anemones, class cubozoa, box jellies, class scyphozoa, true jellies, general characteristics, cnidocytes (with nematocyst, radial symmetry, tissue-level development: diploblastic. Phylum ctenophora: general characteristics, move with cilia comb plates, biradial symmetry, diploblastic, collenchyma, paired tentacles with colloblasts, monoecious sexual reproduction. General characteristics: some with gastrovascular cavity (many with no gut, radially arranged nerve cords, most commensalist or mutualist, monoecious sexual reproduction. Phylum rotifera: general characteristics, wheel organ/corona, mastax, eutely. Phylum acanthocephala: general characteristics, vertebrate endoparasites, spiny proboscis, syncytial outer surface, protonephridia, dioecious. Phylum nemata: general characteristics, some parasitic, but many free-living, probably second biggest phylum (probably at least 500,000 species, eutely, collagenous cuticle, pseudocoelomate, only longitudinal muscles. Phylum tardigrada: general characteristics, water bears , cryptobiosis, somewhat similar to arthropods, fluid feeders, open circulatory, eucoeomate. Phylum onychophora: general characteristics, velvet worms , somewhat similar to arthropods, open circulatory, eucoelomate.
