Animals are multicellular organisms, that is, their body is made up of more than one cell. They cannot synthesize their own food and most of them are motile. Their body is either radially symmetrical (body parts are arranged regularly around the central axis) or bilaterally symmetrical (their body is divided from head to tail; both the sides are mirror images).

Question

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Answer 1

Question

Chapter 31, Problem 1TYK

Summary Introduction

Introduction:

Animals are multicellular organisms, that is, their body is made up of more than one cell. They cannot synthesize their own food and most of them are motile. Their body is either radially symmetrical (body parts are arranged regularly around the central axis) or bilaterally symmetrical (their body is divided from head to tail; both the sides are mirror images).

Expert Solution & Answer

Answer to Problem 1TYK

Correct answer:

Sessile type of character is not typically observed in most animals.

Explanation of Solution

The explanation for the correct answer:

Option (b) is given as: the sessile character is not typically observed in most animals. Motility of an organism is defined as its ability to move from one place to another in search of food, shelter, and to interact with other animals at some stage of their life. Most animals are motile or they are motile at least during some stage of their lives. Though some organisms become sessile adults, they were motile at some stage of their life such as during the larval stage (examples like mollusks and barnacles). The sessile character is not typically observed in most mammals. Hence, option (b) is correct.

The explanation for the incorrect answer:

Option (a) is given as: heterotrophic characteristic is not typically observed in most animals. Heterotroph organisms cannot synthesize their own food and they eat other organisms to acquire nutrients and energy. Therefore, all animals are heterotrophs and it is a typical characteristic of most animals. So, it is incorrect.

Option (c) is given as: bilaterally symmetrical characteristic is not typically observed in most animals. Cutting bilateral symmetrical bodies into half from the middle, from head to tail, the left and the right-side form mirror images. Most of the eumetazoans other than the phyla Cnidaria and Ctenophora are bilaterally symmetrical. So, it is incorrect.

Option (d) is given as: multicellular characteristic is not typically observed in most animals. All animals are multicellular; their bodies are made up of more than one cell. It is a typical characteristic of all mammals. So, it is incorrect.

Option (e) is given as: motile at some stage of their life cycle. All the organisms of kingdom Animalia are motile at some stage of their life cycle and this is a typical characteristic of most animals. So, it is incorrect.

Hence options (a), (c), (d), and (e) are incorrect.

Conclusion

Therefore, it can be concluded that the characteristic features of most animals include that they are heterotrophic, multicellular, motile at some stage of their life but, they are not sessile organisms.

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Answer 2

Question

Chapter 31, Problem 1TYK

Summary Introduction

Introduction:

Animals are multicellular organisms, that is, their body is made up of more than one cell. They cannot synthesize their own food and most of them are motile. Their body is either radially symmetrical (body parts are arranged regularly around the central axis) or bilaterally symmetrical (their body is divided from head to tail; both the sides are mirror images).

Expert Solution & Answer

Answer to Problem 1TYK

Correct answer:

Sessile type of character is not typically observed in most animals.

Explanation of Solution

The explanation for the correct answer:

Option (b) is given as: the sessile character is not typically observed in most animals. Motility of an organism is defined as its ability to move from one place to another in search of food, shelter, and to interact with other animals at some stage of their life. Most animals are motile or they are motile at least during some stage of their lives. Though some organisms become sessile adults, they were motile at some stage of their life such as during the larval stage (examples like mollusks and barnacles). The sessile character is not typically observed in most mammals. Hence, option (b) is correct.

The explanation for the incorrect answer:

Option (a) is given as: heterotrophic characteristic is not typically observed in most animals. Heterotroph organisms cannot synthesize their own food and they eat other organisms to acquire nutrients and energy. Therefore, all animals are heterotrophs and it is a typical characteristic of most animals. So, it is incorrect.

Option (c) is given as: bilaterally symmetrical characteristic is not typically observed in most animals. Cutting bilateral symmetrical bodies into half from the middle, from head to tail, the left and the right-side form mirror images. Most of the eumetazoans other than the phyla Cnidaria and Ctenophora are bilaterally symmetrical. So, it is incorrect.

Option (d) is given as: multicellular characteristic is not typically observed in most animals. All animals are multicellular; their bodies are made up of more than one cell. It is a typical characteristic of all mammals. So, it is incorrect.

Option (e) is given as: motile at some stage of their life cycle. All the organisms of kingdom Animalia are motile at some stage of their life cycle and this is a typical characteristic of most animals. So, it is incorrect.

Hence options (a), (c), (d), and (e) are incorrect.

Conclusion

Therefore, it can be concluded that the characteristic features of most animals include that they are heterotrophic, multicellular, motile at some stage of their life but, they are not sessile organisms.

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Answer 3

Question

Chapter 31, Problem 1TYK

Summary Introduction

Introduction:

Animals are multicellular organisms, that is, their body is made up of more than one cell. They cannot synthesize their own food and most of them are motile. Their body is either radially symmetrical (body parts are arranged regularly around the central axis) or bilaterally symmetrical (their body is divided from head to tail; both the sides are mirror images).

Expert Solution & Answer

Answer to Problem 1TYK

Correct answer:

Sessile type of character is not typically observed in most animals.

Explanation of Solution

The explanation for the correct answer:

Option (b) is given as: the sessile character is not typically observed in most animals. Motility of an organism is defined as its ability to move from one place to another in search of food, shelter, and to interact with other animals at some stage of their life. Most animals are motile or they are motile at least during some stage of their lives. Though some organisms become sessile adults, they were motile at some stage of their life such as during the larval stage (examples like mollusks and barnacles). The sessile character is not typically observed in most mammals. Hence, option (b) is correct.

The explanation for the incorrect answer:

Option (a) is given as: heterotrophic characteristic is not typically observed in most animals. Heterotroph organisms cannot synthesize their own food and they eat other organisms to acquire nutrients and energy. Therefore, all animals are heterotrophs and it is a typical characteristic of most animals. So, it is incorrect.

Option (c) is given as: bilaterally symmetrical characteristic is not typically observed in most animals. Cutting bilateral symmetrical bodies into half from the middle, from head to tail, the left and the right-side form mirror images. Most of the eumetazoans other than the phyla Cnidaria and Ctenophora are bilaterally symmetrical. So, it is incorrect.

Option (d) is given as: multicellular characteristic is not typically observed in most animals. All animals are multicellular; their bodies are made up of more than one cell. It is a typical characteristic of all mammals. So, it is incorrect.

Option (e) is given as: motile at some stage of their life cycle. All the organisms of kingdom Animalia are motile at some stage of their life cycle and this is a typical characteristic of most animals. So, it is incorrect.

Hence options (a), (c), (d), and (e) are incorrect.

Conclusion

Therefore, it can be concluded that the characteristic features of most animals include that they are heterotrophic, multicellular, motile at some stage of their life but, they are not sessile organisms.

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Answer 4

Question

Chapter 31, Problem 1TYK

Summary Introduction

Introduction:

Animals are multicellular organisms, that is, their body is made up of more than one cell. They cannot synthesize their own food and most of them are motile. Their body is either radially symmetrical (body parts are arranged regularly around the central axis) or bilaterally symmetrical (their body is divided from head to tail; both the sides are mirror images).

Expert Solution & Answer

Answer to Problem 1TYK

Correct answer:

Sessile type of character is not typically observed in most animals.

Explanation of Solution

The explanation for the correct answer:

Option (b) is given as: the sessile character is not typically observed in most animals. Motility of an organism is defined as its ability to move from one place to another in search of food, shelter, and to interact with other animals at some stage of their life. Most animals are motile or they are motile at least during some stage of their lives. Though some organisms become sessile adults, they were motile at some stage of their life such as during the larval stage (examples like mollusks and barnacles). The sessile character is not typically observed in most mammals. Hence, option (b) is correct.

The explanation for the incorrect answer:

Option (a) is given as: heterotrophic characteristic is not typically observed in most animals. Heterotroph organisms cannot synthesize their own food and they eat other organisms to acquire nutrients and energy. Therefore, all animals are heterotrophs and it is a typical characteristic of most animals. So, it is incorrect.

Option (c) is given as: bilaterally symmetrical characteristic is not typically observed in most animals. Cutting bilateral symmetrical bodies into half from the middle, from head to tail, the left and the right-side form mirror images. Most of the eumetazoans other than the phyla Cnidaria and Ctenophora are bilaterally symmetrical. So, it is incorrect.

Option (d) is given as: multicellular characteristic is not typically observed in most animals. All animals are multicellular; their bodies are made up of more than one cell. It is a typical characteristic of all mammals. So, it is incorrect.

Option (e) is given as: motile at some stage of their life cycle. All the organisms of kingdom Animalia are motile at some stage of their life cycle and this is a typical characteristic of most animals. So, it is incorrect.

Hence options (a), (c), (d), and (e) are incorrect.

Conclusion

Therefore, it can be concluded that the characteristic features of most animals include that they are heterotrophic, multicellular, motile at some stage of their life but, they are not sessile organisms.

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Answer 5

Chapter 31, Problem 1TYK

Summary Introduction

Introduction:

Animals are multicellular organisms, that is, their body is made up of more than one cell. They cannot synthesize their own food and most of them are motile. Their body is either radially symmetrical (body parts are arranged regularly around the central axis) or bilaterally symmetrical (their body is divided from head to tail; both the sides are mirror images).

Expert Solution & Answer

Answer to Problem 1TYK

Correct answer:

Sessile type of character is not typically observed in most animals.

Explanation of Solution

The explanation for the correct answer:

Option (b) is given as: the sessile character is not typically observed in most animals. Motility of an organism is defined as its ability to move from one place to another in search of food, shelter, and to interact with other animals at some stage of their life. Most animals are motile or they are motile at least during some stage of their lives. Though some organisms become sessile adults, they were motile at some stage of their life such as during the larval stage (examples like mollusks and barnacles). The sessile character is not typically observed in most mammals. Hence, option (b) is correct.

The explanation for the incorrect answer:

Option (a) is given as: heterotrophic characteristic is not typically observed in most animals. Heterotroph organisms cannot synthesize their own food and they eat other organisms to acquire nutrients and energy. Therefore, all animals are heterotrophs and it is a typical characteristic of most animals. So, it is incorrect.

Option (c) is given as: bilaterally symmetrical characteristic is not typically observed in most animals. Cutting bilateral symmetrical bodies into half from the middle, from head to tail, the left and the right-side form mirror images. Most of the eumetazoans other than the phyla Cnidaria and Ctenophora are bilaterally symmetrical. So, it is incorrect.

Option (d) is given as: multicellular characteristic is not typically observed in most animals. All animals are multicellular; their bodies are made up of more than one cell. It is a typical characteristic of all mammals. So, it is incorrect.

Option (e) is given as: motile at some stage of their life cycle. All the organisms of kingdom Animalia are motile at some stage of their life cycle and this is a typical characteristic of most animals. So, it is incorrect.

Hence options (a), (c), (d), and (e) are incorrect.

Conclusion

Therefore, it can be concluded that the characteristic features of most animals include that they are heterotrophic, multicellular, motile at some stage of their life but, they are not sessile organisms.

Answer 6

Chapter 31, Problem 1TYK

Summary Introduction

Introduction:

Animals are multicellular organisms, that is, their body is made up of more than one cell. They cannot synthesize their own food and most of them are motile. Their body is either radially symmetrical (body parts are arranged regularly around the central axis) or bilaterally symmetrical (their body is divided from head to tail; both the sides are mirror images).

Expert Solution & Answer

Answer to Problem 1TYK

Correct answer:

Sessile type of character is not typically observed in most animals.

Explanation of Solution

The explanation for the correct answer:

Option (b) is given as: the sessile character is not typically observed in most animals. Motility of an organism is defined as its ability to move from one place to another in search of food, shelter, and to interact with other animals at some stage of their life. Most animals are motile or they are motile at least during some stage of their lives. Though some organisms become sessile adults, they were motile at some stage of their life such as during the larval stage (examples like mollusks and barnacles). The sessile character is not typically observed in most mammals. Hence, option (b) is correct.

The explanation for the incorrect answer:

Option (a) is given as: heterotrophic characteristic is not typically observed in most animals. Heterotroph organisms cannot synthesize their own food and they eat other organisms to acquire nutrients and energy. Therefore, all animals are heterotrophs and it is a typical characteristic of most animals. So, it is incorrect.

Option (c) is given as: bilaterally symmetrical characteristic is not typically observed in most animals. Cutting bilateral symmetrical bodies into half from the middle, from head to tail, the left and the right-side form mirror images. Most of the eumetazoans other than the phyla Cnidaria and Ctenophora are bilaterally symmetrical. So, it is incorrect.

Option (d) is given as: multicellular characteristic is not typically observed in most animals. All animals are multicellular; their bodies are made up of more than one cell. It is a typical characteristic of all mammals. So, it is incorrect.

Option (e) is given as: motile at some stage of their life cycle. All the organisms of kingdom Animalia are motile at some stage of their life cycle and this is a typical characteristic of most animals. So, it is incorrect.

Hence options (a), (c), (d), and (e) are incorrect.

Conclusion

Therefore, it can be concluded that the characteristic features of most animals include that they are heterotrophic, multicellular, motile at some stage of their life but, they are not sessile organisms.

Answer 7

Chapter 31, Problem 1TYK

Summary Introduction

Introduction:

Animals are multicellular organisms, that is, their body is made up of more than one cell. They cannot synthesize their own food and most of them are motile. Their body is either radially symmetrical (body parts are arranged regularly around the central axis) or bilaterally symmetrical (their body is divided from head to tail; both the sides are mirror images).

Answer 8

Expert Solution & Answer

Answer to Problem 1TYK

Correct answer:

Sessile type of character is not typically observed in most animals.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Explanation of Solution

The explanation for the correct answer:

Option (b) is given as: the sessile character is not typically observed in most animals. Motility of an organism is defined as its ability to move from one place to another in search of food, shelter, and to interact with other animals at some stage of their life. Most animals are motile or they are motile at least during some stage of their lives. Though some organisms become sessile adults, they were motile at some stage of their life such as during the larval stage (examples like mollusks and barnacles). The sessile character is not typically observed in most mammals. Hence, option (b) is correct.

The explanation for the incorrect answer:

Option (a) is given as: heterotrophic characteristic is not typically observed in most animals. Heterotroph organisms cannot synthesize their own food and they eat other organisms to acquire nutrients and energy. Therefore, all animals are heterotrophs and it is a typical characteristic of most animals. So, it is incorrect.

Option (c) is given as: bilaterally symmetrical characteristic is not typically observed in most animals. Cutting bilateral symmetrical bodies into half from the middle, from head to tail, the left and the right-side form mirror images. Most of the eumetazoans other than the phyla Cnidaria and Ctenophora are bilaterally symmetrical. So, it is incorrect.

Option (d) is given as: multicellular characteristic is not typically observed in most animals. All animals are multicellular; their bodies are made up of more than one cell. It is a typical characteristic of all mammals. So, it is incorrect.

Option (e) is given as: motile at some stage of their life cycle. All the organisms of kingdom Animalia are motile at some stage of their life cycle and this is a typical characteristic of most animals. So, it is incorrect.

Hence options (a), (c), (d), and (e) are incorrect.

Answer 12

Conclusion

Therefore, it can be concluded that the characteristic features of most animals include that they are heterotrophic, multicellular, motile at some stage of their life but, they are not sessile organisms.

Answer 13

Ch. 31.1 - 1. What characteristics distinguish animals from...Ch. 31.1 - How does the ability of animals to move through...Ch. 31.2 - What is a tissue, and what three primary tissue...Ch. 31.2 - What type of body symmetry do humans have?Ch. 31.2 - What is the functional significance of the coelom?Ch. 31.2 - Prob. 4SB Ch. 31.3 - Which major groupings of animals defined on the...Ch. 31.3 - Prob. 2SB Ch. 31.4 - Prob. 1SB Ch. 31.4 - Prob. 2SB

Concept explainers

Answer to Problem 1TYK

Explanation of Solution

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Chapter 31 Solutions