Clade refers to a grouping that includes an ancestor and all of its descendents.

Question

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Answer 1

Question

Chapter 27, Problem 1TYU

Summary Introduction

Introduction:

Clade refers to a grouping that includes an ancestor and all of its descendents.

Expert Solution & Answer

Answer to Problem 1TYU

Correct answer:

The bilaterian is the clade that contains the greatest number of animal species. Therefore, option (B) is correct.

Explanation of Solution

Reason for the correct statement:

The division of body into two equal halves and presence of three germ layers are the shared derived characters that define the clade “Bilateria”. This clade comprises the most of the animal phyla and it members.

Option (B) is given as “the bilaterians”.

As,” the bilaterian is the clade that contains the greatest number of animal species”, it is the right answer.

Hence, option (B) is correct.

Reason for the incorrect statements:

Option (A) is given as “the vertebrates”.

The vertebrates are those animals that are characterized by the presence of notochord, pharyngeal gill slits, dorsal nerve cord and post-anal tail. They do not comprise the greatest number of animal species. So, it is a wrong answer.

Option (C) is given as “the deuterostomes”.

The deuterostomes are those animals that develop anus first and mouth later and they do not comprise the greatest number of animal species. So, it is a wrong answer.

Option (D) is given as “the insects”.

The insects are hexapod animals with two pair of wings, exoskeleton and antennae, and they do not comprise the greatest number of animal species. So, it is a wrong answer.

Hence, options (A), (C), and (D) are incorrect.

Conclusion

The bilaterians is the clade that contains the greatest number of animal species.

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After you feel comfortable with your counting method and identifying cells in the various stages of mitosis, use the four images below of whitefish blastula to count the cells in each stage until you reach 100 total cells, recording your data below in Data Table 1. (You may not need to use all four images. Stop counting when you reach 100 total cells.) After totaling the cells in each stage, calculate the percent of cells in each stage. (Divide total of stage by overall total of 100 and then multiply by 100 to obtain percentage.) Data Table 1Stage Totals PercentInterphase Mitosis: Prophase Metaphase Anaphase Telophase Cytokinesis Totals 100 100% To find the length of time whitefish blastula cells spend in each stage, multiply the percent (recorded as a decimal, in other words take the percent number and divide by 100) by 24 hours. (Example: If percent is 20%, then Time in Hours = .2 * 24 = 4.8) Record your data in Data…

Answer 2

Question

Chapter 27, Problem 1TYU

Summary Introduction

Introduction:

Clade refers to a grouping that includes an ancestor and all of its descendents.

Expert Solution & Answer

Answer to Problem 1TYU

Correct answer:

The bilaterian is the clade that contains the greatest number of animal species. Therefore, option (B) is correct.

Explanation of Solution

Reason for the correct statement:

The division of body into two equal halves and presence of three germ layers are the shared derived characters that define the clade “Bilateria”. This clade comprises the most of the animal phyla and it members.

Option (B) is given as “the bilaterians”.

As,” the bilaterian is the clade that contains the greatest number of animal species”, it is the right answer.

Hence, option (B) is correct.

Reason for the incorrect statements:

Option (A) is given as “the vertebrates”.

The vertebrates are those animals that are characterized by the presence of notochord, pharyngeal gill slits, dorsal nerve cord and post-anal tail. They do not comprise the greatest number of animal species. So, it is a wrong answer.

Option (C) is given as “the deuterostomes”.

The deuterostomes are those animals that develop anus first and mouth later and they do not comprise the greatest number of animal species. So, it is a wrong answer.

Option (D) is given as “the insects”.

The insects are hexapod animals with two pair of wings, exoskeleton and antennae, and they do not comprise the greatest number of animal species. So, it is a wrong answer.

Hence, options (A), (C), and (D) are incorrect.

Conclusion

The bilaterians is the clade that contains the greatest number of animal species.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 3

Question

Chapter 27, Problem 1TYU

Summary Introduction

Introduction:

Clade refers to a grouping that includes an ancestor and all of its descendents.

Expert Solution & Answer

Answer to Problem 1TYU

Correct answer:

The bilaterian is the clade that contains the greatest number of animal species. Therefore, option (B) is correct.

Explanation of Solution

Reason for the correct statement:

The division of body into two equal halves and presence of three germ layers are the shared derived characters that define the clade “Bilateria”. This clade comprises the most of the animal phyla and it members.

Option (B) is given as “the bilaterians”.

As,” the bilaterian is the clade that contains the greatest number of animal species”, it is the right answer.

Hence, option (B) is correct.

Reason for the incorrect statements:

Option (A) is given as “the vertebrates”.

The vertebrates are those animals that are characterized by the presence of notochord, pharyngeal gill slits, dorsal nerve cord and post-anal tail. They do not comprise the greatest number of animal species. So, it is a wrong answer.

Option (C) is given as “the deuterostomes”.

The deuterostomes are those animals that develop anus first and mouth later and they do not comprise the greatest number of animal species. So, it is a wrong answer.

Option (D) is given as “the insects”.

The insects are hexapod animals with two pair of wings, exoskeleton and antennae, and they do not comprise the greatest number of animal species. So, it is a wrong answer.

Hence, options (A), (C), and (D) are incorrect.

Conclusion

The bilaterians is the clade that contains the greatest number of animal species.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 4

Question

Chapter 27, Problem 1TYU

Summary Introduction

Introduction:

Clade refers to a grouping that includes an ancestor and all of its descendents.

Expert Solution & Answer

Answer to Problem 1TYU

Correct answer:

The bilaterian is the clade that contains the greatest number of animal species. Therefore, option (B) is correct.

Explanation of Solution

Reason for the correct statement:

The division of body into two equal halves and presence of three germ layers are the shared derived characters that define the clade “Bilateria”. This clade comprises the most of the animal phyla and it members.

Option (B) is given as “the bilaterians”.

As,” the bilaterian is the clade that contains the greatest number of animal species”, it is the right answer.

Hence, option (B) is correct.

Reason for the incorrect statements:

Option (A) is given as “the vertebrates”.

The vertebrates are those animals that are characterized by the presence of notochord, pharyngeal gill slits, dorsal nerve cord and post-anal tail. They do not comprise the greatest number of animal species. So, it is a wrong answer.

Option (C) is given as “the deuterostomes”.

The deuterostomes are those animals that develop anus first and mouth later and they do not comprise the greatest number of animal species. So, it is a wrong answer.

Option (D) is given as “the insects”.

The insects are hexapod animals with two pair of wings, exoskeleton and antennae, and they do not comprise the greatest number of animal species. So, it is a wrong answer.

Hence, options (A), (C), and (D) are incorrect.

Conclusion

The bilaterians is the clade that contains the greatest number of animal species.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Chapter 27, Problem 1TYU

Summary Introduction

Introduction:

Clade refers to a grouping that includes an ancestor and all of its descendents.

Expert Solution & Answer

Answer to Problem 1TYU

Correct answer:

The bilaterian is the clade that contains the greatest number of animal species. Therefore, option (B) is correct.

Explanation of Solution

Reason for the correct statement:

The division of body into two equal halves and presence of three germ layers are the shared derived characters that define the clade “Bilateria”. This clade comprises the most of the animal phyla and it members.

Option (B) is given as “the bilaterians”.

As,” the bilaterian is the clade that contains the greatest number of animal species”, it is the right answer.

Hence, option (B) is correct.

Reason for the incorrect statements:

Option (A) is given as “the vertebrates”.

The vertebrates are those animals that are characterized by the presence of notochord, pharyngeal gill slits, dorsal nerve cord and post-anal tail. They do not comprise the greatest number of animal species. So, it is a wrong answer.

Option (C) is given as “the deuterostomes”.

The deuterostomes are those animals that develop anus first and mouth later and they do not comprise the greatest number of animal species. So, it is a wrong answer.

Option (D) is given as “the insects”.

The insects are hexapod animals with two pair of wings, exoskeleton and antennae, and they do not comprise the greatest number of animal species. So, it is a wrong answer.

Hence, options (A), (C), and (D) are incorrect.

Conclusion

The bilaterians is the clade that contains the greatest number of animal species.

Answer 6

Chapter 27, Problem 1TYU

Summary Introduction

Introduction:

Clade refers to a grouping that includes an ancestor and all of its descendents.

Expert Solution & Answer

Answer to Problem 1TYU

Correct answer:

The bilaterian is the clade that contains the greatest number of animal species. Therefore, option (B) is correct.

Explanation of Solution

Reason for the correct statement:

The division of body into two equal halves and presence of three germ layers are the shared derived characters that define the clade “Bilateria”. This clade comprises the most of the animal phyla and it members.

Option (B) is given as “the bilaterians”.

As,” the bilaterian is the clade that contains the greatest number of animal species”, it is the right answer.

Hence, option (B) is correct.

Reason for the incorrect statements:

Option (A) is given as “the vertebrates”.

The vertebrates are those animals that are characterized by the presence of notochord, pharyngeal gill slits, dorsal nerve cord and post-anal tail. They do not comprise the greatest number of animal species. So, it is a wrong answer.

Option (C) is given as “the deuterostomes”.

The deuterostomes are those animals that develop anus first and mouth later and they do not comprise the greatest number of animal species. So, it is a wrong answer.

Option (D) is given as “the insects”.

The insects are hexapod animals with two pair of wings, exoskeleton and antennae, and they do not comprise the greatest number of animal species. So, it is a wrong answer.

Hence, options (A), (C), and (D) are incorrect.

Conclusion

The bilaterians is the clade that contains the greatest number of animal species.

Answer 7

Chapter 27, Problem 1TYU

Summary Introduction

Introduction:

Clade refers to a grouping that includes an ancestor and all of its descendents.

Answer 8

Expert Solution & Answer

Answer to Problem 1TYU

Correct answer:

The bilaterian is the clade that contains the greatest number of animal species. Therefore, option (B) is correct.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Explanation of Solution

Reason for the correct statement:

The division of body into two equal halves and presence of three germ layers are the shared derived characters that define the clade “Bilateria”. This clade comprises the most of the animal phyla and it members.

Option (B) is given as “the bilaterians”.

As,” the bilaterian is the clade that contains the greatest number of animal species”, it is the right answer.

Hence, option (B) is correct.

Reason for the incorrect statements:

Option (A) is given as “the vertebrates”.

The vertebrates are those animals that are characterized by the presence of notochord, pharyngeal gill slits, dorsal nerve cord and post-anal tail. They do not comprise the greatest number of animal species. So, it is a wrong answer.

Option (C) is given as “the deuterostomes”.

The deuterostomes are those animals that develop anus first and mouth later and they do not comprise the greatest number of animal species. So, it is a wrong answer.

Option (D) is given as “the insects”.

The insects are hexapod animals with two pair of wings, exoskeleton and antennae, and they do not comprise the greatest number of animal species. So, it is a wrong answer.

Hence, options (A), (C), and (D) are incorrect.

Answer 12

Conclusion

The bilaterians is the clade that contains the greatest number of animal species.

Answer 13

Ch. 27.1 - Prob. 1CC Ch. 27.1 - Prob. 2CC Ch. 27.1 - Prob. 3CC Ch. 27.2 - What is the Cambrian explosion? Why is it...Ch. 27.2 - Prob. 2CC Ch. 27.3 - Prob. 1CC Ch. 27.3 - WHAT IF? Would it be accurate to describe the...Ch. 27.4 - Prob. 1CC Ch. 27.4 - Describe two key adaptations of aquatic...Ch. 27.4 - MAKE CONNECTIONS The radiation of bilaterians in...

Clade refers to a grouping that includes an ancestor and all of its descendents.

Concept explainers

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Introduction:

Clade refers to a grouping that includes an ancestor and all of its descendents.

Answer to Problem 1TYU

Explanation of Solution

Want to see more full solutions like this?

Chapter 27 Solutions

Clade refers to a grouping that includes an ancestor and all of its descendents.

Concept explainers

Videos

Introduction: Clade refers to a grouping that includes an ancestor and all of its descendents.

Answer to Problem 1TYU

Explanation of Solution

Want to see more full solutions like this?

Chapter 27 Solutions

Introduction:

Clade refers to a grouping that includes an ancestor and all of its descendents.