The lophotrochozoans are the descendants of one common ancestor. The name lophotrochozoa is because of the morphological traits found in these animals, the lophophore and the trochophore.

Question

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Answer 1

Question

Chapter 31, Problem 1TYK

Summary Introduction

Introduction:

The lophotrochozoans are the descendants of one common ancestor. The name lophotrochozoa is because of the morphological traits found in these animals, the lophophore and the trochophore.

Expert Solution & Answer

Answer to Problem 1TYK

Correct answer:

The lophophore is a structure found in 3 phyla out of the 13 phyla, categorized under the lophotrochozoans. The mouth is ringed by tufts and helps in suspension feeding.

Explanation of Solution

Explanation/Justification for the correct answer:

Option (a) is given as a filter-feeding specialized structure. The lophophore is a structure that helps in suspension feeding and bears tufts. This structure is found in phoronids, bryozoans, and brachiopods. Hence, Option (a) is correct.

Explanation for incorrect answer:

Option (b) is given as a single opening in species with a blind gut. The lophophore is a feeding structure, so it is not a single opening in species. So, it is an incorrect option.

Option (c) is given as a distinctive type of larva with a band of cilia. It is not a particular type of larva as it is only a feeding structure present in the lophotrochozoans. So, it is an incorrect option.

Option (d) is given as a synapomorphy that defines lophotrochozoans. Spiral cleavage in these organisms is a synapomorphy. Lophophore is a feeding structure rather than a synapomorphy. So, it is an incorrect option.

Hence, options (b), (c), and (d) are incorrect.

Conclusion

The lophophore is present around the mouth as a ring of tentacles, which are ciliated. The food particles present in the water are taken up by the water currents to draw food.

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Answer 2

Question

Chapter 31, Problem 1TYK

Summary Introduction

Introduction:

The lophotrochozoans are the descendants of one common ancestor. The name lophotrochozoa is because of the morphological traits found in these animals, the lophophore and the trochophore.

Expert Solution & Answer

Answer to Problem 1TYK

Correct answer:

The lophophore is a structure found in 3 phyla out of the 13 phyla, categorized under the lophotrochozoans. The mouth is ringed by tufts and helps in suspension feeding.

Explanation of Solution

Explanation/Justification for the correct answer:

Option (a) is given as a filter-feeding specialized structure. The lophophore is a structure that helps in suspension feeding and bears tufts. This structure is found in phoronids, bryozoans, and brachiopods. Hence, Option (a) is correct.

Explanation for incorrect answer:

Option (b) is given as a single opening in species with a blind gut. The lophophore is a feeding structure, so it is not a single opening in species. So, it is an incorrect option.

Option (c) is given as a distinctive type of larva with a band of cilia. It is not a particular type of larva as it is only a feeding structure present in the lophotrochozoans. So, it is an incorrect option.

Option (d) is given as a synapomorphy that defines lophotrochozoans. Spiral cleavage in these organisms is a synapomorphy. Lophophore is a feeding structure rather than a synapomorphy. So, it is an incorrect option.

Hence, options (b), (c), and (d) are incorrect.

Conclusion

The lophophore is present around the mouth as a ring of tentacles, which are ciliated. The food particles present in the water are taken up by the water currents to draw food.

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Answer 3

Question

Chapter 31, Problem 1TYK

Summary Introduction

Introduction:

The lophotrochozoans are the descendants of one common ancestor. The name lophotrochozoa is because of the morphological traits found in these animals, the lophophore and the trochophore.

Expert Solution & Answer

Answer to Problem 1TYK

Correct answer:

The lophophore is a structure found in 3 phyla out of the 13 phyla, categorized under the lophotrochozoans. The mouth is ringed by tufts and helps in suspension feeding.

Explanation of Solution

Explanation/Justification for the correct answer:

Option (a) is given as a filter-feeding specialized structure. The lophophore is a structure that helps in suspension feeding and bears tufts. This structure is found in phoronids, bryozoans, and brachiopods. Hence, Option (a) is correct.

Explanation for incorrect answer:

Option (b) is given as a single opening in species with a blind gut. The lophophore is a feeding structure, so it is not a single opening in species. So, it is an incorrect option.

Option (c) is given as a distinctive type of larva with a band of cilia. It is not a particular type of larva as it is only a feeding structure present in the lophotrochozoans. So, it is an incorrect option.

Option (d) is given as a synapomorphy that defines lophotrochozoans. Spiral cleavage in these organisms is a synapomorphy. Lophophore is a feeding structure rather than a synapomorphy. So, it is an incorrect option.

Hence, options (b), (c), and (d) are incorrect.

Conclusion

The lophophore is present around the mouth as a ring of tentacles, which are ciliated. The food particles present in the water are taken up by the water currents to draw food.

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Answer 4

Question

Chapter 31, Problem 1TYK

Summary Introduction

Introduction:

The lophotrochozoans are the descendants of one common ancestor. The name lophotrochozoa is because of the morphological traits found in these animals, the lophophore and the trochophore.

Expert Solution & Answer

Answer to Problem 1TYK

Correct answer:

The lophophore is a structure found in 3 phyla out of the 13 phyla, categorized under the lophotrochozoans. The mouth is ringed by tufts and helps in suspension feeding.

Explanation of Solution

Explanation/Justification for the correct answer:

Option (a) is given as a filter-feeding specialized structure. The lophophore is a structure that helps in suspension feeding and bears tufts. This structure is found in phoronids, bryozoans, and brachiopods. Hence, Option (a) is correct.

Explanation for incorrect answer:

Option (b) is given as a single opening in species with a blind gut. The lophophore is a feeding structure, so it is not a single opening in species. So, it is an incorrect option.

Option (c) is given as a distinctive type of larva with a band of cilia. It is not a particular type of larva as it is only a feeding structure present in the lophotrochozoans. So, it is an incorrect option.

Option (d) is given as a synapomorphy that defines lophotrochozoans. Spiral cleavage in these organisms is a synapomorphy. Lophophore is a feeding structure rather than a synapomorphy. So, it is an incorrect option.

Hence, options (b), (c), and (d) are incorrect.

Conclusion

The lophophore is present around the mouth as a ring of tentacles, which are ciliated. The food particles present in the water are taken up by the water currents to draw food.

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

Answer 5

Chapter 31, Problem 1TYK

Summary Introduction

Introduction:

The lophotrochozoans are the descendants of one common ancestor. The name lophotrochozoa is because of the morphological traits found in these animals, the lophophore and the trochophore.

Expert Solution & Answer

Answer to Problem 1TYK

Correct answer:

The lophophore is a structure found in 3 phyla out of the 13 phyla, categorized under the lophotrochozoans. The mouth is ringed by tufts and helps in suspension feeding.

Explanation of Solution

Explanation/Justification for the correct answer:

Option (a) is given as a filter-feeding specialized structure. The lophophore is a structure that helps in suspension feeding and bears tufts. This structure is found in phoronids, bryozoans, and brachiopods. Hence, Option (a) is correct.

Explanation for incorrect answer:

Option (b) is given as a single opening in species with a blind gut. The lophophore is a feeding structure, so it is not a single opening in species. So, it is an incorrect option.

Option (c) is given as a distinctive type of larva with a band of cilia. It is not a particular type of larva as it is only a feeding structure present in the lophotrochozoans. So, it is an incorrect option.

Option (d) is given as a synapomorphy that defines lophotrochozoans. Spiral cleavage in these organisms is a synapomorphy. Lophophore is a feeding structure rather than a synapomorphy. So, it is an incorrect option.

Hence, options (b), (c), and (d) are incorrect.

Conclusion

The lophophore is present around the mouth as a ring of tentacles, which are ciliated. The food particles present in the water are taken up by the water currents to draw food.

Answer 6

Chapter 31, Problem 1TYK

Summary Introduction

Introduction:

The lophotrochozoans are the descendants of one common ancestor. The name lophotrochozoa is because of the morphological traits found in these animals, the lophophore and the trochophore.

Expert Solution & Answer

Answer to Problem 1TYK

Correct answer:

The lophophore is a structure found in 3 phyla out of the 13 phyla, categorized under the lophotrochozoans. The mouth is ringed by tufts and helps in suspension feeding.

Explanation of Solution

Explanation/Justification for the correct answer:

Option (a) is given as a filter-feeding specialized structure. The lophophore is a structure that helps in suspension feeding and bears tufts. This structure is found in phoronids, bryozoans, and brachiopods. Hence, Option (a) is correct.

Explanation for incorrect answer:

Option (b) is given as a single opening in species with a blind gut. The lophophore is a feeding structure, so it is not a single opening in species. So, it is an incorrect option.

Option (c) is given as a distinctive type of larva with a band of cilia. It is not a particular type of larva as it is only a feeding structure present in the lophotrochozoans. So, it is an incorrect option.

Option (d) is given as a synapomorphy that defines lophotrochozoans. Spiral cleavage in these organisms is a synapomorphy. Lophophore is a feeding structure rather than a synapomorphy. So, it is an incorrect option.

Hence, options (b), (c), and (d) are incorrect.

Conclusion

The lophophore is present around the mouth as a ring of tentacles, which are ciliated. The food particles present in the water are taken up by the water currents to draw food.

Answer 7

Chapter 31, Problem 1TYK

Summary Introduction

Introduction:

The lophotrochozoans are the descendants of one common ancestor. The name lophotrochozoa is because of the morphological traits found in these animals, the lophophore and the trochophore.

Answer 8

Expert Solution & Answer

Answer to Problem 1TYK

Correct answer:

The lophophore is a structure found in 3 phyla out of the 13 phyla, categorized under the lophotrochozoans. The mouth is ringed by tufts and helps in suspension feeding.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Explanation of Solution

Explanation/Justification for the correct answer:

Option (a) is given as a filter-feeding specialized structure. The lophophore is a structure that helps in suspension feeding and bears tufts. This structure is found in phoronids, bryozoans, and brachiopods. Hence, Option (a) is correct.

Explanation for incorrect answer:

Option (b) is given as a single opening in species with a blind gut. The lophophore is a feeding structure, so it is not a single opening in species. So, it is an incorrect option.

Option (c) is given as a distinctive type of larva with a band of cilia. It is not a particular type of larva as it is only a feeding structure present in the lophotrochozoans. So, it is an incorrect option.

Option (d) is given as a synapomorphy that defines lophotrochozoans. Spiral cleavage in these organisms is a synapomorphy. Lophophore is a feeding structure rather than a synapomorphy. So, it is an incorrect option.

Hence, options (b), (c), and (d) are incorrect.

Answer 12

Conclusion

The lophophore is present around the mouth as a ring of tentacles, which are ciliated. The food particles present in the water are taken up by the water currents to draw food.

Answer 13

Ch. 31 - Prob. 1TYK Ch. 31 - 2. What is the function of the arthropod...Ch. 31 - 3. One trait that is shared by the Lophotrochozoa...Ch. 31 - Which protostome phylum is distinguished by having...Ch. 31 - 5. Propose an explanation for why annelids and...Ch. 31 - 6. Use your understanding of protostome evolution...Ch. 31 - 7. Pose a hypothesis to explain why the evolution...Ch. 31 - 8. CAUTION Evaluate this statement Evolution is...Ch. 31 - Brachiopodais a phylum within the Lophotrochozoa....Ch. 31 - Adaptive radiations are said to occur when a...

The lophotrochozoans are the descendants of one common ancestor. The name lophotrochozoa is because of the morphological traits found in these animals, the lophophore and the trochophore.

Concept explainers

Introduction:

The lophotrochozoans are the descendants of one common ancestor. The name lophotrochozoa is because of the morphological traits found in these animals, the lophophore and the trochophore.

Answer to Problem 1TYK

Explanation of Solution

Want to see more full solutions like this?

Chapter 31 Solutions

The lophotrochozoans are the descendants of one common ancestor. The name lophotrochozoa is because of the morphological traits found in these animals, the lophophore and the trochophore.

Concept explainers

Introduction: The lophotrochozoans are the descendants of one common ancestor. The name lophotrochozoa is because of the morphological traits found in these animals, the lophophore and the trochophore.

Answer to Problem 1TYK

Explanation of Solution

Want to see more full solutions like this?

Chapter 31 Solutions

Introduction:

The lophotrochozoans are the descendants of one common ancestor. The name lophotrochozoa is because of the morphological traits found in these animals, the lophophore and the trochophore.