Loose Leaf For Integrated Principles Of Zoology
18th Edition
ISBN: 9781260411140
Author: Cleveland P Hickman Jr. Emeritus, Susan L. Keen, David J Eisenhour Professor PhD, Allan Larson, Helen I'Anson Associate Professor of Biology
Publisher: McGraw-Hill Education
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Chapter 15, Problem 8RQ
Summary Introduction
To determine: The difference in the structure and internal symmetry between clams and Brachiopods.
Introduction: In ectoprocts, the ciliary water currents carry food particles between the gaping valves and over the feeding organ called a lophophore. The tentacles trap the food particles and the ciliated grooves carry the particles along the arm of the lophophore to their mouth.
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Loose Leaf For Integrated Principles Of Zoology
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- If the lophophore is absent in brachiopods, would you consider them to be members of Mollusca? Why or why not?arrow_forwardWhat material is found in the skeleton of all sponges?arrow_forwarda) List down subclasses of Gastropoda b) Snails are distinguished by an anatomical process known as where the visceral mass of the animals rotates 180° to one side during the development. c) acts as a trapdoor to close the shell. d) How many tentacles do the land snails have? e) What is the function of radula?arrow_forward
- Give contrasting external characteristics between Phylum Nematoda and Phylum Mollusca.arrow_forwardSerial repetition of the body parts is most specifically referred to as O tacky metamerization O proglottidism tagmatization somaticism tubiculousarrow_forwardWhy is bilateral symmetry of adaptive value for actively motile animals?arrow_forward
- Which other invertebrate groups are likely to be the closest relatives of molluscs? What evidence supports and contradicts these relationships?arrow_forwardWhat are the criteria that delimit this phylum echinodermata to its classes? What are the striking characteristics of this phylum which help you identify mollusks easily? What are the importance of mollusks? Differentiate univalves from bivalves. How do mollusks breathe?arrow_forwardMollusca (clams, abalone, nudibranchs, snails, squid, octopi, etc). Unifying features include shell, mantle, radula, foot, visceral mass Which classes show a loss of the shell. How does the shell benefit an organism, how does the loss of the shell benefit other members of this phylum? Distinguish between polyplacophora, bivalva, gastropoda, and chephalopoda We see the first evolution of a true eye here. Who has it? What are chromatophores? How doe members of this group use them? What other unique defense addaptaions do we see in this group? (warning colors, 2 shells, ink)arrow_forward
- Describe the unique anatomical features of mollusksarrow_forwardEchinodermata is the first phylum you have examined whose members possess true endoskeletons. What are some advantages that an endoskeleton provides?arrow_forwardThe basic body plan of a mollusk is to have a head, foot, and visceral mass. In the case of the cephalopods, the foot; Has become part of the digestive system Has been modified into a beak Has been modified into tentacles Has been modified into part of the respiratory systemarrow_forward
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