CAMPBELL BIOLOGY IN FOCUS-MOD.MASTERING
3rd Edition
ISBN: 9780135191811
Author: Urry
Publisher: PEARSON
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Textbook Question
Chapter 27, Problem 3TYU
Which of the following was probably the least important factor in bringing about the Cambrian explosion?
- A. the emergence of predator-prey relationships among animals
- B. the accumulation of sufficient atmospheric oxygen to support the more active
metabolism of mobile animals - C. C . the movement of animals onto land
- D. the origin of Hox genes and other genetic changes affecting the regulation of developmental genes
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Which of the following is not a hypothesis
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a. Increased continental drift creating
greater terrestrial landmasses
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development of exoskeletons
O c. Evolution of the Hox genes which
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in the oceans
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Cnidaria
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Which of the following statements is BEST supported by the phylogenetic tree?
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The development of a bony skeleton was a significant evolutionary step for ocean-dwelling animals.
B
Most warm-blooded animals evolved to have hair, while cold-blooded animals did not.
C
Most land animals require a vertebral column, while ocean animals do not.
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The evolution of the amniotic egg was specific to ocean-dwelling animals.
Chapter 27 Solutions
CAMPBELL BIOLOGY IN FOCUS-MOD.MASTERING
Ch. 27.1 - Prob. 1CCCh. 27.1 - Prob. 2CCCh. 27.1 - Prob. 3CCCh. 27.2 - What is the Cambrian explosion? Why is it...Ch. 27.2 - Prob. 2CCCh. 27.3 - Prob. 1CCCh. 27.3 - WHAT IF? Would it be accurate to describe the...Ch. 27.4 - Prob. 1CCCh. 27.4 - Describe two key adaptations of aquatic...Ch. 27.4 - MAKE CONNECTIONS The radiation of bilaterians in...
Ch. 27.5 - Describe two adaptations that have enabled insects...Ch. 27.5 - MAKE CONNECTIONS Compare and contrast how the...Ch. 27.6 - Describe three key amniote adaptations for life on...Ch. 27.6 - Prob. 2CCCh. 27.6 - WHAT IF? Which came first, the chicken or the egg?...Ch. 27.7 - Describe how ocean communities changed in the...Ch. 27.7 - Prob. 2CCCh. 27.7 - Prob. 3CCCh. 27 - Prob. 1TYUCh. 27 - Fossil steroid and molecular clock evidence...Ch. 27 - Which of the following was probably the least...Ch. 27 - Prob. 4TYUCh. 27 - Prob. 5TYUCh. 27 - Prob. 6TYUCh. 27 - Prob. 7TYUCh. 27 - FOCUS ON EVOLUTION In Figure 27.29, circle the...Ch. 27 - FOCUS ON ORGANIZATION Early tetrapods had a...Ch. 27 - SYNTHESIZE YOUR KNOWLEDGE Collectively, do these...
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