Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Textbook Question
Chapter 2, Problem 17TYU
Test Your Understanding
Evaluate and Synthesize
17. EVOLUTION LINK Scientists have proposed various initiatives to detect water vapor, as well as oxygen and carbondioxide, in the atmospheres of distant planets. Which of these biosignatures (chemical markers that are evidence for life) would you consider the most fundamental indicator that life could have evolved on these planets? Explain your reasoning.
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Activity 3. Deepening The Concepts
Directions: Answer the following questions.
1. How does (a) relative dating and (b) absolute/radioactive datine
determine the age of fossils?
2. How does embryology provide evidence for evolution?
3. How do homologous and vestigial structures provide evidence for
evolution?
4. What could be possible for some species belonging to the same family
to be presently living in various locations on Earth? You can furthel
support your answer with an example.
Practice
Portfolio Activity, Part 1
Five species of Xenite-an imaginary animal-have been found on a planet in another
solar system. Based on the order of the rock layers in which fossils were found, species
A appears to be the oldest and probably the most primitive. There is no evidence to
support the relative age of the other species of Xenite.
A
в с
Be the evolutionary biologist, and complete the following activities to build a
cladogram of Xenites.
a. spines
b. eyestalks
c. tail
D
d. mouth
1. Create a table noting which species of Xenite has each characteristic below,
marking each as yes or no.
E
2. Study your table, and figure out the order of evolution of each character. You
have been given reason to believe that, based on the fossil record, Xenite A is
the ancestral species. For the Xenites, consider what appear to be homologies
and analogies. Create your cladogram for the Xenites.
You may upload a picture of a drawing of your table and your tree using the image box.
nolhlond to sonsblud mont sqrienols
What's More
Activity 3. Deepening The Concepts
Directions: Answer the following questions.
1. How does (a) relative dating and (b) absolute/radioactive dating
determine the age of fossils?
2. How does embryology provide evidence for evolution?
3. How do homologous and vestigial structures provide evidence for
evolution?
4. What could be possible for some species belonging to the same family
to be presently living in various locations on Earth? You can further
support your answer with an example.
Scoring Rubric
4 noints
ints
Chapter 2 Solutions
Biology (MindTap Course List)
Ch. 2.1 - Prob. 1LOCh. 2.1 - Compare the physical properties (mass and charge)...Ch. 2.1 - Prob. 3LOCh. 2.1 - Prob. 1CCh. 2.1 - What is a radioisotope? What are some ways...Ch. 2.1 - Prob. 3CCh. 2.2 - Prob. 4LOCh. 2.2 - Prob. 5LOCh. 2.2 - Prob. 6LOCh. 2.2 - What enables a radioisotope to substitute for an...
Ch. 2.2 - Which kind of chemical formula provides the most...Ch. 2.2 - Prob. 3CCh. 2.3 - Distinguish among covalent bonds, ionic bonds,...Ch. 2.3 - Prob. 1CCh. 2.3 - Prob. 2CCh. 2.3 - Prob. 3CCh. 2.3 - Prob. 4CCh. 2.4 - Prob. 8LOCh. 2.4 - In what form is energy transferred in a redox...Ch. 2.5 - Explain how hydrogen bonds between adjacent water...Ch. 2.5 - Prob. 1CCh. 2.5 - What are some properties of water that result from...Ch. 2.5 - How can weak forces, such as hydrogen bonds, have...Ch. 2.6 - Contrast acids and bases, and discuss their...Ch. 2.6 - Convert the hydrogen ion concentration (moles per...Ch. 2.6 - Describe the composition of a salt and explain the...Ch. 2.6 - Prob. 1CCh. 2.6 - Prob. 2CCh. 2.6 - Prob. 3CCh. 2.6 - Prob. 4CCh. 2 - Test Your Understanding Know and Comprehend 1....Ch. 2 - Prob. 2TYUCh. 2 - Prob. 3TYUCh. 2 - Test Your Understanding Know and Comprehend 4. 11H...Ch. 2 - Test Your Understanding Know and Comprehend 5. The...Ch. 2 - Test Your Understanding Know and Comprehend 6....Ch. 2 - Test Your Understanding Know and Comprehend 7. In...Ch. 2 - Test Your Understanding Know and Comprehend 8....Ch. 2 - Prob. 9TYUCh. 2 - Prob. 10TYUCh. 2 - Test Your Understanding Know and Comprehend 11....Ch. 2 - Prob. 12TYUCh. 2 - Prob. 13TYUCh. 2 - Test Your Understanding Apply and Analyze 14....Ch. 2 - Prob. 15TYUCh. 2 - Prob. 16TYUCh. 2 - Test Your Understanding Evaluate and Synthesize...
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