To differentiate: A source from a sink in the plant. Introduction: The explanation of phloem transport is known as the pressure flow theory. The theory suggests that the organic compounds dissolved in the phloem sap moves under positive pressure from source to sink.

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Answer 1

Question

Chapter 21.6, Problem 4MC

Summary Introduction

To differentiate:

A source from a sink in the plant.

Introduction:

The explanation of phloem transport is known as the pressure flow theory. The theory suggests that the organic compounds dissolved in the phloem sap moves under positive pressure from source to sink.

Summary Introduction

To determine:

The reason for a single plant to act as both a source and a sink.

Introduction:

A source is a part of the plant which produces sugar through photosynthesis, and a sink is that part of the plant which is dependent on the source for sugar.

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As scientists research and develop biofuels, they are faced with many tradeoffs. A plant's usefulness for biofuels depends on how much energy can be collected from the plant matter. In addition, growing plants on a large scale requires energy—such as the gasoline and power needed to run tractors and other harvesting equipment or the energy needed to create and distribute fertilizers and pesticides. An efficient biofuel would maximize the ratio of energy output to energy input. The following graph illustrates the results of a 10-year study analyzing three different crops used in biofuel production. The data show how much energy was required to grow each crop on 1 hectare of land (energy input) and how much energy was recovered from the total crop on each hectare of land (energy output). A hectare is a measurement of an area of land and is roughly the same as 2.5 acres. What was the estimated energy input of the grass? A. kcal x 10^6 B. 2kcal x 10^6 C. 8kcal x 10^6

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Answer 2

Question

Chapter 21.6, Problem 4MC

Summary Introduction

To differentiate:

A source from a sink in the plant.

Introduction:

The explanation of phloem transport is known as the pressure flow theory. The theory suggests that the organic compounds dissolved in the phloem sap moves under positive pressure from source to sink.

Summary Introduction

To determine:

The reason for a single plant to act as both a source and a sink.

Introduction:

A source is a part of the plant which produces sugar through photosynthesis, and a sink is that part of the plant which is dependent on the source for sugar.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 3

Question

Chapter 21.6, Problem 4MC

Summary Introduction

To differentiate:

A source from a sink in the plant.

Introduction:

The explanation of phloem transport is known as the pressure flow theory. The theory suggests that the organic compounds dissolved in the phloem sap moves under positive pressure from source to sink.

Summary Introduction

To determine:

The reason for a single plant to act as both a source and a sink.

Introduction:

A source is a part of the plant which produces sugar through photosynthesis, and a sink is that part of the plant which is dependent on the source for sugar.

Expert Solution & Answer

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Check out a sample textbook solution

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Answer 4

Question

Chapter 21.6, Problem 4MC

Summary Introduction

To differentiate:

A source from a sink in the plant.

Introduction:

The explanation of phloem transport is known as the pressure flow theory. The theory suggests that the organic compounds dissolved in the phloem sap moves under positive pressure from source to sink.

Summary Introduction

To determine:

The reason for a single plant to act as both a source and a sink.

Introduction:

A source is a part of the plant which produces sugar through photosynthesis, and a sink is that part of the plant which is dependent on the source for sugar.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 5

Chapter 21.6, Problem 4MC

Summary Introduction

To differentiate:

A source from a sink in the plant.

Introduction:

The explanation of phloem transport is known as the pressure flow theory. The theory suggests that the organic compounds dissolved in the phloem sap moves under positive pressure from source to sink.

Summary Introduction

To determine:

The reason for a single plant to act as both a source and a sink.

Introduction:

A source is a part of the plant which produces sugar through photosynthesis, and a sink is that part of the plant which is dependent on the source for sugar.

Answer 6

Chapter 21.6, Problem 4MC

Summary Introduction

To differentiate:

A source from a sink in the plant.

Introduction:

The explanation of phloem transport is known as the pressure flow theory. The theory suggests that the organic compounds dissolved in the phloem sap moves under positive pressure from source to sink.

Answer 7

Chapter 21.6, Problem 4MC

Summary Introduction

To differentiate:

A source from a sink in the plant.

Introduction:

The explanation of phloem transport is known as the pressure flow theory. The theory suggests that the organic compounds dissolved in the phloem sap moves under positive pressure from source to sink.

Answer 8

Summary Introduction

To determine:

The reason for a single plant to act as both a source and a sink.

Introduction:

A source is a part of the plant which produces sugar through photosynthesis, and a sink is that part of the plant which is dependent on the source for sugar.

Answer 9

Summary Introduction

To determine:

The reason for a single plant to act as both a source and a sink.

Introduction:

A source is a part of the plant which produces sugar through photosynthesis, and a sink is that part of the plant which is dependent on the source for sugar.

Answer 10

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Answer 11

Expert Solution & Answer

Answer 12

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Answer 13

Ch. 21.1 - Prob. 1MC Ch. 21.1 - Prob. 2MC Ch. 21.2 - Prob. 1MC Ch. 21.2 - Prob. 2MC Ch. 21.2 - Prob. 3MC Ch. 21.3 - Prob. 1MC Ch. 21.3 - Prob. 2MC Ch. 21.3 - Compare and contrast tracheids, vessel elements,...Ch. 21.4 - Prob. 1MC Ch. 21.4 - Prob. 2MC

To differentiate: A source from a sink in the plant. Introduction: The explanation of phloem transport is known as the pressure flow theory. The theory suggests that the organic compounds dissolved in the phloem sap moves under positive pressure from source to sink.

Solution Summary: The author explains how phloem transport is explained by the pressure flow theory. Source and sink can be differentiated based on plant part, nature, and examples.

Concept explainers

To differentiate:

A source from a sink in the plant.

Introduction:

The explanation of phloem transport is known as the pressure flow theory. The theory suggests that the organic compounds dissolved in the phloem sap moves under positive pressure from source to sink.

To determine:

The reason for a single plant to act as both a source and a sink.

Introduction:

A source is a part of the plant which produces sugar through photosynthesis, and a sink is that part of the plant which is dependent on the source for sugar.

Want to see the full answer?

Chapter 21 Solutions

To differentiate: A source from a sink in the plant. Introduction: The explanation of phloem transport is known as the pressure flow theory. The theory suggests that the organic compounds dissolved in the phloem sap moves under positive pressure from source to sink.

Solution Summary: The author explains how phloem transport is explained by the pressure flow theory. Source and sink can be differentiated based on plant part, nature, and examples.

Concept explainers

To differentiate: A source from a sink in the plant. Introduction: The explanation of phloem transport is known as the pressure flow theory. The theory suggests that the organic compounds dissolved in the phloem sap moves under positive pressure from source to sink.

To determine: The reason for a single plant to act as both a source and a sink. Introduction: A source is a part of the plant which produces sugar through photosynthesis, and a sink is that part of the plant which is dependent on the source for sugar.

Want to see the full answer?

Chapter 21 Solutions

To differentiate:

A source from a sink in the plant.

Introduction:

The explanation of phloem transport is known as the pressure flow theory. The theory suggests that the organic compounds dissolved in the phloem sap moves under positive pressure from source to sink.

To determine:

The reason for a single plant to act as both a source and a sink.

Introduction:

A source is a part of the plant which produces sugar through photosynthesis, and a sink is that part of the plant which is dependent on the source for sugar.