BIOL 3454 1st Edition Lecture 14 I zoology lecture 10 10 II schistosoma female has gen canal male fits in in III phylum mesozoa greek mesos middle zoon animal missing link between protozoa metazoa parasites symbionts most only in 20 30 cells into 2 layers rhomozoans orthonectids will be a from this slide IV phylum Nemertea ribbon worms nemertes one of the nereids unerring one refers to the sharp aim of the probosicis V characteristics ecersible proboscis unique nemerteans mostly free living a few parasitic bilateral symmetry cylindriacal anteriorly flattened posteriorly VI basics true circulatory system no respiratory system candy cane worm spear on the end grab and pull in 3 4 s on where did the parasitic paragonomis lunk fluke end of chapter chapter 15 I Gnaathiferans small These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute II Phylum Gnathostomulida greek gnathos mouth stoma opening small jaw worms III phylum Micrognathozoa 3 pairs of jaws only female reproductive organs poorly understood move by cilia unique ventral ciliary pad that produces glue live in sedimaent monotypic limnognathia maerski discovered 1994 described in 2000 IV phylum Rotifera latin root rota wheel and fera bearing unique organ the corona oar wheel organ lots of variation in life history traits some can desiccate live for years V external features of rotifers ciliated corona body non ciliated mouth on corona on midventral side cuticle swim or creep VI internal features mastax mouth to chew cloaca 2 tubes next to each other and excrete from same opening ciliated pit first time seen in an animal can sense light VII rotifer reproduction dioecious no males bdelloide monogonata occur only a few weeks a yr mictic eggs amictic eggs need to know test questions VIII life cycles of IX phylum cycliophora discovered in 1995 mouthparts of decapod crustaceans eat bacteria of bits of dropped food ushaped or complete gut X phylum Gastrotricha hermaphrodic XI phylym Entoprocta greek entos within proktos note remember endo and eco anus opens inside the mouth ring XII form function calyx look like polyps XIII three phyla within lophophoraa very controversaial phylogenetic placement bryosom ms means moss XIV form function XV phylum brchiopoda shell called a valve clams oysters bivalve brachiopoda have univalve XVI phylum phoronida white heifer XVII unresolved polytomy mollusca annelida loophotrochozoa phylogenetic mess
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