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 17, Problem 14RQ
What was the evolutionary significance of segmentation and the coelom to its earliest lophotrochozoan possessors?
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What was the evolutionary significance of segmentation and the coelom to its earliest lophotrochozoan possessors?
What is a major difference in function of the coelom in holothurians compared with other echinoderms?
How does a molluscan coelom develop embryologically? Why was the evolutionary development of a coelom important?
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Loose Leaf For Integrated Principles Of Zoology
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- How is a hemocoel different from a true coelom?arrow_forwardDoes coelom present in bilateria?arrow_forwardDistinguish between (a) radial and bilateral symmetry; (b) blastula andgastrula; (c) direct and indirect development; (d) complete andincomplete digestive tracts; (e) coelom and pseudocoelom.arrow_forward
- Match the description given with either protostome or deuterostome or neither 1)spiral cleavage 2)blastopore becomes the anus 3)schizocoelous coelom formation 4)indeterminate cleavage 5)determinate cleavage 6)blastopore becomes the primitive streak 7)radial cleavage 8)enterocoelous coelom formationarrow_forwardWhat is the difference between atrium and coelom?arrow_forwardWhat are benthoic animals?arrow_forward
- What can be inferred about the evolution of the cranium and the vertebral column from examining hagfishes and lampreys?arrow_forwardCephalopods 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_forwardWhat is the point of dividing the coelom into the thoracic and abdominal cavities? Why would a single cavity not function as well?arrow_forward
- How did the characteristic differences between aquatic and terres-trial environments influence the early evolution of tetrapods?arrow_forwardCoelomates have an enclosed coelom completely lined with mesodermally derived tissue. Accelomates have an enclosed coelom partially lined with mesodermally derived tissue. Pseudocoelomates have no enclosed coelom. true or falsearrow_forward
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