Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
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Textbook Question
Chapter 27.6, Problem 1CC
Describe three key amniote adaptations for life on land.
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Describe three adaptations that have allowed amniotes to become completely terrestrial.
Pharyngeal slits are which of the following?
Question 24 options:
a)
Openings in the pharynx. In aquatic chordates they allow for exit of water that enters the mouth.
b)
Elongations of the posterior portion of the body. Use for locomotion in fish, or balance in some terrestrial vertebrates.
c)
Flexible, rod-shaped structures that grows from mesoderm. Gives support to an animal in embryonic development of chordates or for entire life depending on the species.
d)
Tissues that produces thyroid type hormones.
e)
Hollow tubes that develops from ectoderm. Develops into the central nervous system.
Describe ways in which amniotes are more functionally or structur-ally suited for terrestriality than are anamniotes.
Chapter 27 Solutions
Campbell Biology in Focus
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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- Describe how paedomorphosis as a mechanism could explain the evolution of the chordate body plan (from echinoderm larval form to a craniate form).arrow_forwardMammals belong to a group of amniotes known as synapsids. Three major lineages of mammals had emerged by the early Cretaceous period. In a tabulated form, compare these three lineages to illustrate their diversity in terms of: a. Embryonic developmen, b. How the young are fed and c. Period of gestationarrow_forwardWhich of the following statements is correct for all amniotes? A. They have internal fertilization, three embryonic membraes, are independent of water for reprodction B. They have external fertilization if they live in water, have alantoic membranes to carry oxygenated blood to the embryo, and lack a shell on their eggs. C. They lay eggs covered with a shell, are viviporous and have a marsupium D. They have an embryonic chorionic membrane that becomes part of the placenta, has cells with Golgi bodies,and a yolk sac E. They have three embryonic membranes, have notochords, and are ovoviviparous.arrow_forward
- What is thought to be the function of the shell morphology in African pancake tortoise?arrow_forward1. a) List 5 distinguishing factors of reptiles and their similar characteristics to birds. b) How can you establish the evolutionary relationship between reptiles and birds? c) Amniotes are divided into three groups based on their skull morphologies. What are these three groups, and how do their skulls differ? Which living amniotes have originated from each of these three groups? 2. Fill in the table below. Compare the different orders within each class.arrow_forwardList the four traits that define chordates.arrow_forward
- Describe how metamorphosis changes the structures involved in gas exchange over the life cycle of animals in the clade Anura, and what evolutionary advantage this change provides.arrow_forwardHow does tracing diversification of lice help trace the dispersal of modern humans?arrow_forwardImagine that you are asked to predict the reproductive mode (oviparous or viviparous) for a number of newly discovered amniote species. In your own words, and giving examples, explain why this task would be easy for some groups of amniotes but very difficult for other groups of amniotes.arrow_forward
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