Lab_06_Worksheet_Key - b.

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NAME ________KEY __________ SECTION ______ EFB285 - ZOOLOGY LAB LAB 6 1. (2 points) List two ways in which molluscs differ from all of the other animal groups studied thus far: a. ___________ they have a true coelom________ _________________________________ b. ___________ torsion, shell, etc._______ _______________________________________ 2. What structure opens the shell?_ elastic hinge ligament (also foot and relaxed adductor muscles 3. Observe the nautilus shell and note how each chamber is structured. In which chamber does this animal live?___ The closest one to the outside _________________________________________ 4. (2 points) Choose 2 animals from the demonstration stations and make an inference about their feeding habits based on their structure. a. ________________________________________________________________________
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Unformatted text preview: b. ________________________________________________________________________ 5. (2 points) About glochidia. a. Why would a mussel benefit from having parasitic larvae that attach to fish gills? _______ increased dispersion of offspring ______________________________________ b. What would a conservationist have to consider when conserving such an animal? _______ the host fish and the molluscs needs__________________________ _________ 6. Which structures are typically found within the coelom of molluscs? _______________________ _______ the heart, gonads, and maybe kidneys_____ ___________________________________ 7. Circle the gastropod with a sinistral shell:...
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This homework help was uploaded on 04/10/2008 for the course EFB 285 taught by Professor Fierke during the Spring '08 term at Syracuse.

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