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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Textbook Question
Chapter 22, Problem 3RQ
How do we know that echinoderms were derived from an ancestor with bilateral symmetry?
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What evidence suggests that radial symmetry in echinoderms was secondarily derived?
What evidence suggests that ancestral echinoderms were sessile?
ECHINODERMS
a)- Describe in detail how is the Hydrostatic Vascular System (Aquifer) of the Echinoderms.
b) Describe flake is gas exchange in Echinoderms.
c) -Why are echinoderms specialists in regeneration?
Chapter 22 Solutions
Loose Leaf For Integrated Principles Of Zoology
Ch. 22 - Prob. 1RQCh. 22 - Prob. 2RQCh. 22 - How do we know that echinoderms were derived from...Ch. 22 - Prob. 4RQCh. 22 - Prob. 5RQCh. 22 - Prob. 6RQCh. 22 - What structures are involved in the following...Ch. 22 - Prob. 8RQCh. 22 - Prob. 9RQCh. 22 - Match groups in the left column with all correct...
Ch. 22 - Define the following: pedicellariae, madreporite,...Ch. 22 - Prob. 12RQCh. 22 - Give four examples of how echinoderms are...Ch. 22 - What is a major difference in function of the...Ch. 22 - What characteristics do Hemichordata share with...Ch. 22 - Distinguish Enteropneusta from Pterobranchia.Ch. 22 - For Further Thought The phylogenetic placement of...
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- based on the picture, what is the synamorphic character of echinoderms and hemichordates?arrow_forwardWhat evidences links echinoderms , hemichordates and chordates to the same evolutionary lineage?arrow_forwardWhy are echinoderms considered part of the Deuterostomes, despite having incredibly unique morphology?arrow_forward
- 1) Which statement about lungs and gas bladders is true? A) the first osteichthyans had lungs and these lungs were later converted to gas bladders in actinopterygians B) the first osteichthyans had gas bladders and these gas bladders were later converted to lungs in sarcopterygians C) after the two lineages branched apart, actinopterygians evolved gas bladder and sarcopterygians evolved lungs" 2) Why are sharks reliant on ram ventilation unable to breath while remaining in place like other fish do?arrow_forwardMammals are farther removed from echinoderms in phylogenetic alliance as they do with birds. Yet birds have a meroblastic cleavage, whereas mammalian cleavage is holoblastic, like echinoderms. How will the mammal convince the bird that it did not deviate from family traditions?arrow_forwardDo echinoderms present with cephalization?arrow_forward
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