1026 - 1 An organism has an eight-plated dorsal calcareous...

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October 26, 2011 1. An organism has an eight-plated dorsal calcareous shell (dorsoventrally flattened), a scraping radula, a 3-chambered heart, multiple gills, and is broad and flat. ..the organism is a member of a) bivalvia b) monoplacophora c) cephalopoda d) gastropoda e) polyplacophora 2. which of the following is not correct with respect to torsion? a) Occurs during trochophore larva stage b) allows head to be withdrawn into shell c) moves the mantle cavity to the front of the body, twisting visceral organs through a 90-180 degree rotation d) anus, mouth, and manle cavity become anterior and open above the head e) dextral (shell coils to the right), sinistral (shell coils to the left) Lophotrochozoa: Annelida 1. one of the most derived members of the lophotrochozoans 2. segmented worms a) organ-system level of organization b) condutcion of nervous impulses can go dorsally or ventrally c) metamerism an advance over the mollusca group peritoneum connective tissue each segment has repeats of organs and reproductive structures
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This note was uploaded on 12/07/2011 for the course EEMB 3 taught by Professor Carlson during the Fall '08 term at UCSB.

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1026 - 1 An organism has an eight-plated dorsal calcareous...

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