IA MODIFIED MASTERING BIOLOGY WITH E TEX
IA MODIFIED MASTERING BIOLOGY WITH E TEX
12th Edition
ISBN: 9780136781752
Author: Urry
Publisher: PEARSON
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Chapter 32, Problem 2TYU

The distinction between sponges and other animal phyla is based mainly on the absence versus the presence of

(A) a body cavity.

(B) a complete digestive tract.

(C) mesoderm.

(D) tissues.

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Phylum Arthropoda: 1. Comment on the size (number of species) within this phylum. 2. General Body Plan: (circle the appropriate answer) a) Simple or complex, b) Do they have true tissues? Yes or No c) asymmetry, radial symmetry, bilateral symmetry d) Do they have organs? Yes or No e) What type of appendages? f) What type of skeleton? 3. Describe molting.
Phylum Echinodermata: 1. Briefly describe the general body plan of these animals by stating: a) the type of symmetry they have, b) the type of "skeleton" they have, c) the type of vascular system they have. 2. State classes, the common name(s) of animals, and the general characteristics differentiating each class. a) b) c) d)
A previously unknown animal is being studied so that it can be classified.  It is an invertebrate, triploblastic, dorsoventrally flattened, acoelomate, and has flame cells.  Which phylum would you place it in? A)Arthropoda. B)Porifera C)Mollusca. D)Platyhelminthes. E)Cnidaria.
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