1500_15_Hemi+UroChordates

This body wall is called a tunic and hence the common

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Unformatted text preview: ence the common name for ascidians "Tunicate". http://home.uchicago.edu/~egrey/ascidian_biology.htm Ascidians: basic body plan traits of adult stage 2. Digestige system: nearly all species sessile suspension feeders. Water enters through the incurrent siphons and passes through the mucouscovered pharynx (on which the food is trapped) and then exits through the excurrent siphon. The endostyle, an organ thought to be the precursor to the thyroid gland, produces the mucous, which is rolled up and ingested along with any food that has been trapped in it. A new net is then secreted over the pharynx and the process starts all over again. http://home.uchicago.edu/~egrey/ascidian_biology.htm Ascidians: comparison of larval and adult body plan http://home.uchicago.edu/~egrey/ascidian_biology.htm Ascidians: comparison of larval and adult body plan http://home.uchicago.edu/~egrey/ascidian_biology.htm Similarity of ascidian larva body plan organization with Similarity higher chordates Sea squirt [Ciona intestinalis] http://www.ncbi.nlm.nih.gov/genomes/leuks.cgi Sea...
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This note was uploaded on 08/03/2010 for the course BIO 1500 taught by Professor Pandolfi during the Winter '08 term at Wayne State University.

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