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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Students have asked these similar questions

A sample of blood was taken from the above individual and prepared for haemoglobin analysis. However, when water was added the cells did not lyse and looked normal in size and shape. The technician suspected that they had may have made an error in the protocol – what is the most likely explanation? The cell membranes are more resistant than normal. An isotonic solution had been added instead of water. A solution of 0.1 M NaCl had been added instead of water. Not enough water had been added to the red blood cell pellet. The man had sickle-cell anaemia.

With reference to their absorption spectra of the oxy haemoglobin intact line) and deoxyhemoglobin (broken line) shown in Figure 2 below, how would you best explain the reason why there are differences in the major peaks of the spectra? Figure 2. SPECTRA OF OXYGENATED AND DEOXYGENATED HAEMOGLOBIN OBTAINED WITH THE RECORDING SPECTROPHOTOMETER 1.4 Abs < 0.8 06 0.4 400 420 440 460 480 500 520 540 560 580 600 nm 1. The difference in the spectra is due to a pH change in the deoxy-haemoglobin due to uptake of CO2- 2. There is more oxygen-carrying plasma in the oxy-haemoglobin sample. 3. The change in Mr due to oxygen binding causes the oxy haemoglobin to have a higher absorbance peak. 4. Oxy-haemoglobin is contaminated by carbaminohemoglobin, and therefore has a higher absorbance peak 5. Oxy-haemoglobin absorbs more light of blue wavelengths and less of red wavelengths than deoxy-haemoglobin

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 - 5. Propose an explanation for why annelids and...Ch. 31 - 7. Pose a hypothesis to explain why the evolution...

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.