When the embryo folds up into the gastrula, then the inner layer fuses with the opposite side of the embryo, and forms a tube with two openings. The cylinder of endoderm develops into animal’s digestive tract, where one opening becomes the mouth and the other end becomes anus. In protostomes, the gastrula’s first indention develops into the mouth, and the anus develops from the second opening. In deuterostomes, the first indention becomes the anus and the mouth develops from the second opening.

Question

Want to see the full answer?

Answer 1

Question

Chapter 17, Problem 2MCQ

Summary Introduction

Introduction:

When the embryo folds up into the gastrula, then the inner layer fuses with the opposite side of the embryo, and forms a tube with two openings. The cylinder of endoderm develops into animal’s digestive tract, where one opening becomes the mouth and the other end becomes anus. In protostomes, the gastrula’s first indention develops into the mouth, and the anus develops from the second opening. In deuterostomes, the first indention becomes the anus and the mouth develops from the second opening.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

Which of the following groups includes all of the others? a. Protostomes c. Eumetazoans b. Echinoderms d. Ecdysozoans

Chordates are named for having this generalized structure. A. Spinal cord B. Stomochord C. Notochord D. All of the choices

Hagfish, lampreys, sharks, and tuna are all chordates that can also be classified into which group? a. Craniates b. Vertebrates c. Cartilaginous fish d. Cephalocordata

Answer 2

Question

Chapter 17, Problem 2MCQ

Summary Introduction

Introduction:

When the embryo folds up into the gastrula, then the inner layer fuses with the opposite side of the embryo, and forms a tube with two openings. The cylinder of endoderm develops into animal’s digestive tract, where one opening becomes the mouth and the other end becomes anus. In protostomes, the gastrula’s first indention develops into the mouth, and the anus develops from the second opening. In deuterostomes, the first indention becomes the anus and the mouth develops from the second opening.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 3

Question

Chapter 17, Problem 2MCQ

Summary Introduction

Introduction:

When the embryo folds up into the gastrula, then the inner layer fuses with the opposite side of the embryo, and forms a tube with two openings. The cylinder of endoderm develops into animal’s digestive tract, where one opening becomes the mouth and the other end becomes anus. In protostomes, the gastrula’s first indention develops into the mouth, and the anus develops from the second opening. In deuterostomes, the first indention becomes the anus and the mouth develops from the second opening.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 4

Question

Chapter 17, Problem 2MCQ

Summary Introduction

Introduction:

When the embryo folds up into the gastrula, then the inner layer fuses with the opposite side of the embryo, and forms a tube with two openings. The cylinder of endoderm develops into animal’s digestive tract, where one opening becomes the mouth and the other end becomes anus. In protostomes, the gastrula’s first indention develops into the mouth, and the anus develops from the second opening. In deuterostomes, the first indention becomes the anus and the mouth develops from the second opening.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 5

Chapter 17, Problem 2MCQ

Summary Introduction

Introduction:

When the embryo folds up into the gastrula, then the inner layer fuses with the opposite side of the embryo, and forms a tube with two openings. The cylinder of endoderm develops into animal’s digestive tract, where one opening becomes the mouth and the other end becomes anus. In protostomes, the gastrula’s first indention develops into the mouth, and the anus develops from the second opening. In deuterostomes, the first indention becomes the anus and the mouth develops from the second opening.

Answer 6

Chapter 17, Problem 2MCQ

Summary Introduction

Introduction:

When the embryo folds up into the gastrula, then the inner layer fuses with the opposite side of the embryo, and forms a tube with two openings. The cylinder of endoderm develops into animal’s digestive tract, where one opening becomes the mouth and the other end becomes anus. In protostomes, the gastrula’s first indention develops into the mouth, and the anus develops from the second opening. In deuterostomes, the first indention becomes the anus and the mouth develops from the second opening.

Answer 7

Chapter 17, Problem 2MCQ

Summary Introduction

Introduction:

When the embryo folds up into the gastrula, then the inner layer fuses with the opposite side of the embryo, and forms a tube with two openings. The cylinder of endoderm develops into animal’s digestive tract, where one opening becomes the mouth and the other end becomes anus. In protostomes, the gastrula’s first indention develops into the mouth, and the anus develops from the second opening. In deuterostomes, the first indention becomes the anus and the mouth develops from the second opening.

Answer 8

Expert Solution & Answer

Answer 9

Expert Solution & Answer

Answer 10

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 11

Ch. 17.1 - Prob. 1MC Ch. 17.1 - Prob. 2MC Ch. 17.1 - What features were used to build the animal...Ch. 17.1 - Prob. 4MC Ch. 17.1 - Prob. 5MC Ch. 17.1 - What advantages does segmentation confer?Ch. 17.2 - Prob. 1MC Ch. 17.2 - Prob. 2MC Ch. 17.2 - Prob. 3MC Ch. 17.2 - Prob. 4MC

Solution Summary: The author explains that deuterostomes is the group which includes all chordates, lizards, and echinoderms.

Concept explainers

Videos

Want to see the full answer?

Chapter 17 Solutions