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 18, Problem 20RQ
Summary Introduction
To list: The members of the predominant body plan of each of the protostome phylum.
Introduction: The clade of animals that undergo protostomy during their embryonic development is called protostome. It possesses phyla including annelids, arthropods, and molluscs.
Summary Introduction
To discuss: The way in which the picture of protostome evolution would change if each of the body plan was a homologous character.
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Create a body plan table (Insert → Add Table) for the following animal phyla: Porifera, Cnidaria, Platyhelminthes, Mollusca, Annelida, Nematoda, Arthropoda, Echinodermata, and Chordata. Describe each phylum by identifying the following body plan features.
1) Symmetry: Asymmetrical, Radial, or Bilateral
2) Tissue type: Parazoa, Eumetazoa (diploblastic), or Eumetazoa (triploblastic)
3) Body cavity (if triploblastic): Acoelomate, Psuedocoelomate, or Coelomate
4) Developmental mode (if Coelomate): Protostome or Dueuterostome
Note: Depending on the body plan, features 3 & 4 may not apply to specific phyla.
* Please answer 1) and 2) only. Reposting question for other two to be answered.
Describe a Phylum Porifera organism as:
Parazoa or Eumetazoa
Diploblastic or Triploblastic or neither
Assymetrical or Radial Symmetrical or Bilaterially Symmetrical
Aquatic or Terrestrial
Acoelomate or Pseudocoelomate or Coelomate
Protostome or Deuterostome or Neither
Lophotrochozan or Ecdysosoan or Neither
For phylum Echinoderms and class Crinoidea
1. Characteristics. List whether the organism is:a. Diploblastic or triploblastic (if applicable) b. Deuterostome or protostome (if applicable) c. Coelomate, pseudocoelomate or eucoelomate
2. Organ/system characteristics. Answer the following for each organism:a. How is their circulatory system? b. Excretory/osmoregulation: How does the organism eliminate waste? What organs do they use?c. Skeleton/support: List the structures or ways this organism supports itself.
3. Ecology. Describe/answer the following for each organism:a. Does it have a complete or incomplete digestive system? How does this animal feed?b. Identify any unique feeding structure• Be sure to use the correct terms to identify any unique feeding structure(s) used by theanimal.
Chapter 18 Solutions
Loose Leaf For Integrated Principles Of Zoology
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