Examine the Chiton specimen. Notice on the ventral portion of the organism a large muscular foot, a common feature for all mollusks, what is the muscular foot typically used for?
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The foot is located on the ventral (underside) portion of the organism. Show more…
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Describe the mollusc body plan: Make a table that compares and contrasts the molluscan features; head, shell, mantle, foot in the five classes of molluscs you studied in lab. Describe how the foot is adapted for locomotion in a: 3. What is a radula used for? 4. Which group of mollusks has a closed circulatory system?
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In the general mollusk body plan, the radula is a rasping structure used for feeding; the mantle is responsible for secreting the protective shell; and the foot is used for a wide variety of forms of locomotion depending on the organism's lifestyle.
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PHYLUM MOLLUSCA Organisms in the phylum Mollusca include snails, slugs, octopuses, squids, and oysters, to name a few. They all have a soft body and a muscular foot, which most often is used for movement in some way or another. Using the display specimens and figures, locate the muscular foot of one of the representatives and answer the following questions. Which mollusks have shells? Where does the shell come from? Where do you think organisms like this live? What type of symmetry do these organisms have? What type of skeleton do you find in this phylum? Are these organisms segmented? What type of digestion system do these organisms have? What do you think animals in this group eat?
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