The terrestrial animals exchange gases with the help of lungs and carry out air breathing. However, in the aquatic animals, the exchange of the gases occurs in the water. Water breathing is difficult than breathing in the air. This is because P O 2 (partial pressure of oxygen) within water is very less than P O 2 in the air. Air breathing also has some disadvantages.

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Answer 1

Question

Chapter 42, Problem 2TYK

Summary Introduction

Introduction:

The terrestrial animals exchange gases with the help of lungs and carry out air breathing. However, in the aquatic animals, the exchange of the gases occurs in the water. Water breathing is difficult than breathing in the air. This is because PO2 (partial pressure of oxygen) within water is very less than PO2 in the air. Air breathing also has some disadvantages.

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Answer 2

Question

Chapter 42, Problem 2TYK

Summary Introduction

Introduction:

The terrestrial animals exchange gases with the help of lungs and carry out air breathing. However, in the aquatic animals, the exchange of the gases occurs in the water. Water breathing is difficult than breathing in the air. This is because PO2 (partial pressure of oxygen) within water is very less than PO2 in the air. Air breathing also has some disadvantages.

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Answer 3

Question

Chapter 42, Problem 2TYK

Summary Introduction

Introduction:

The terrestrial animals exchange gases with the help of lungs and carry out air breathing. However, in the aquatic animals, the exchange of the gases occurs in the water. Water breathing is difficult than breathing in the air. This is because PO2 (partial pressure of oxygen) within water is very less than PO2 in the air. Air breathing also has some disadvantages.

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Answer 4

Question

Chapter 42, Problem 2TYK

Summary Introduction

Introduction:

The terrestrial animals exchange gases with the help of lungs and carry out air breathing. However, in the aquatic animals, the exchange of the gases occurs in the water. Water breathing is difficult than breathing in the air. This is because PO2 (partial pressure of oxygen) within water is very less than PO2 in the air. Air breathing also has some disadvantages.

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Answer 5

Chapter 42, Problem 2TYK

Summary Introduction

Introduction:

The terrestrial animals exchange gases with the help of lungs and carry out air breathing. However, in the aquatic animals, the exchange of the gases occurs in the water. Water breathing is difficult than breathing in the air. This is because PO2 (partial pressure of oxygen) within water is very less than PO2 in the air. Air breathing also has some disadvantages.

Answer 6

Chapter 42, Problem 2TYK

Summary Introduction

Introduction:

The terrestrial animals exchange gases with the help of lungs and carry out air breathing. However, in the aquatic animals, the exchange of the gases occurs in the water. Water breathing is difficult than breathing in the air. This is because PO2 (partial pressure of oxygen) within water is very less than PO2 in the air. Air breathing also has some disadvantages.

Answer 7

Chapter 42, Problem 2TYK

Summary Introduction

Introduction:

The terrestrial animals exchange gases with the help of lungs and carry out air breathing. However, in the aquatic animals, the exchange of the gases occurs in the water. Water breathing is difficult than breathing in the air. This is because PO2 (partial pressure of oxygen) within water is very less than PO2 in the air. Air breathing also has some disadvantages.

Answer 8

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Answer 11

Ch. 42 - Prob. 1TYK Ch. 42 - Prob. 2TYK Ch. 42 - Prob. 3TYK Ch. 42 - Prob. 4TYK Ch. 42 - Prob. 5TYU Ch. 42 - Prob. 6TYU Ch. 42 - Prob. 7TYU Ch. 42 - Prob. 8TYU Ch. 42 - Prob. 9TYPSS Ch. 42 - Prob. 10TYPSS

Solution Summary: The author explains that air breathing results in high evaporation rates from the respiratory surface, but water breathing is difficult.

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Chapter 42 Solutions