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 20, Problem 1FFT
Summary Introduction
To describe: The evolution in crustaceans with reference to annelids and another segmented taxon.
Introduction: The animal kingdom is vast; the arthropods are the large group of animals which have a segmented body. The crustaceans are more common of them as they share the common ancestry pattern. Probably the mode of locomotion was the key among all the arthropods which lead them to become more diverse throughout the time.
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Loose Leaf For Integrated Principles Of Zoology
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- Describe four different uses for thoracic appendages seen in different crustaceans. Use specific examples (name the corresponding taxonomic group). Relate the morphology of the appendage to its function.arrow_forwardEchinodermata is the first phylum you have examined whose members possess true endoskeletons. What are some advantages that an endoskeleton provides?arrow_forwardanimals in which of the following classes possess adductor muscles, labial palps, and use their gills for both respiration and feeding? -Bivalvia -Cephalopoda -Polyplacophora -Anthozoa -Gastropodaarrow_forward
- Which of the following structures are homologous in arthropods? 1st leg of horseshoe crab: 1st Maxilla of a king crab Crab antennule: Millepede antennae 1st maxilla of a shrimp: 2nd leg of a spider Millipede mandible: butterfly maxillaarrow_forwarda marine blue crab has ten pairs of jointed appendages, which include large claws called chelipeds to capture food, and eight walking appendages. Notice the differences in the structure of these 8 pairs. Compare the structures present in the first 3 pairs (modified as maxillipeds), and the last five pairs. What do you think are the main functions of the last five pairs? Crustaceans have biramous appendages. What structures are present only in the first pair? In the last pair? What do you think are the function of these structures?arrow_forwardIn comparison with the most basal animal phylum, arthropods exhibit at least five major changes (new features) in their body plan. Name three (3) of these new features.arrow_forward
- Cephalopods are active marine predators, and many molluscan features are modified to fulfill their niche. Explain how each molluscan feature is modified, compared to gastropod and bivalve body plans. 1) Molluscan foot 2) Excurrent Siphon 3) Shell 4) Sensory organs and brainarrow_forwardWhy do you believe squid received the name cephalopod, which means head-foot? What distinguishes the tentacles from the grasping arms? What do the tentacles' specialized ends look like? Explain all in three paragraphs.arrow_forwardCompare and contrast anatomy and ecological role of a Bivalve and a Cephalopod. Based on their anatomy how are they suited to their particular lifestylearrow_forward
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