Campbell Biology In Focus, Loose-leaf Edition (3rd Edition)
3rd Edition
ISBN: 9780134895727
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky
Publisher: PEARSON
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Chapter 23, Problem 8TYU
FOCUS ON ORGANIZATION
You have seen many examples of how form fits function at all levels of the biological hierarchy. However, we can imagine forms that would function better than some forms actually found in nature. For example, if the wings of a bird were not formed from its forelimbs, such a hypothetical bird could fly yet also hold objects with its forelimbs. In a short essay (100-150 words), use the concept of “evolution as tinkering” to explain why there are limits to the functionality of forms in nature.
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. Structure and function is a central theme to the study of biology. Each major group of
organisms has evolved its own body part “tool kit" – a collection of structures that have
evolved in ways that make specific functions possible. From capturing food to digesting
it, and from reproducing to breathing, organisms use structures that have evolved into
different forms as species have adapted to life in different environments. The structure
of wings, for example enable birds and insects to fly. The structures of legs enable
horses to gallop and kangaroos to hop.
a. Think about your own teeth. What kinds of foods do you think human teeth are
suited for?
b. List at least three ways the structure of human teeth serves the function of
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c. Now, finally apply the theme of structure and function to something you're very
familiar with - your hands. List out all the ways you can think of that the
structure of your hands serve the function of your hands.
WRITE ABOUT A THEME: Organization You have seenmany examples of how form fits function at all levels of thebiological hierarchy. However, we can imagine forms thatwould function better than some forms actually found innature. For example, if the wings of a bird were not formedfrom its forelimbs, such a hypothetical bird could fly yet alsohold objects with its forelimbs. In a short essay (100–150words), use the concept of “evolution as tinkering” to explainwhy there are limits to the functionality of forms in nature.
Choose all that apply
Segmentation
Can be fused into specialized functional regions
Is seen in insects, worms, and their relatives
Is important in the evolution of increasing organismal disparity
Is seen in the Cnidaria (jellyfish and friends)
Is seen in vertebrates (animals with backbones, like you)
Chapter 23 Solutions
Campbell Biology In Focus, Loose-leaf Edition (3rd Edition)
Ch. 23.1 - Describe an example from the fossil record that...Ch. 23.1 - Your measurements indicate that a fossilized skull...Ch. 23.1 - WHAT IF? What might a fossil record of life today...Ch. 23.2 - Explain the consequences of plate tectonics for...Ch. 23.2 - Prob. 2CCCh. 23.2 - What factors promote adaptive radiations?Ch. 23.2 - Prob. 4CCCh. 23.3 - Explain how new body forms can originate by...Ch. 23.3 - Why is it likely that Hox genes have played a...Ch. 23.3 - MAKE CONNECTIONS Given that changes in morphology...
Ch. 23.4 - How can the Darwinian concept of descent with...Ch. 23.4 - Prob. 2CCCh. 23 - Which factor most likely caused animals and plants...Ch. 23 - Adaptive radiations can be a direct consequence of...Ch. 23 - A researcher discovers a fossil of what appears to...Ch. 23 - A genetic change that caused a certain Hox gene to...Ch. 23 - A swim bladder is a gas-filled sac that helps fish...Ch. 23 - SCIENTIFIC INQUIRY Herbivory (plant eating) has...Ch. 23 - FOCUS ON EVOLUTION Describe how gene flow, genetic...Ch. 23 - FOCUS ON ORGANIZATION You have seen many examples...Ch. 23 - SYNTHESIZE YOUR KNOWLEDGE In 2010, the Soufriere...
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