The way in which NPP serves to measure the flux of materials as well as energy through an ecosystem. Introduction: Net primary productivity (NPP) is the rate at which the chemical energy produced by plants is stored in the tissues of the primary producers. The GPP is always greater than NPP.

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Answer 1

Question

Chapter 42, Problem 1.1Q

Summary Introduction

To determine: The way in which NPP serves to measure the flux of materials as well as energy through an ecosystem.

Introduction: Net primary productivity (NPP) is the rate at which the chemical energy produced by plants is stored in the tissues of the primary producers. The GPP is always greater than NPP.

Expert Solution & Answer

Explanation of Solution

Aspects of ecosystem functions are the complex processes through which various components share and precisely transform materials and resources. The direct relation between energy and materials implies that net primary productivity is a basic measure of the level at which energy and material flow between the abiotic and biotic components of a particular ecosystem. NPP tells about the specific composition of flow of matter across various trophic levels.

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Question #3: In the KeyGene paper, the authors state that it would be useful if pollen from an apomict would transmit apomixis-inducing genes to the female in the cross (assuming the pollen is viable). Assuming there was just one gene conferring gametophytic obligate apomixis, and that the two parents are inbreds, what would be the consequences of such a cross if: a) The apomixis was a dominant trait? Indicate the genotypes and phenotypes (apomict or non- apomict) of the parents, F1 and F2 generations. Remember to include the expected genotypic and phenotypic ratios (or percentages) in the F1 and F2 generations, and to position the female first (left side) in the parental cross. b) The apomixis was a recessive trait? Indicate the genotypes and phenotypes (apomict or non- apomict) of the parents, F1 and F2 generations. Remember to include the expected genotypic and phenotypic ratios (or percentages) in the F1 and F2 generations, and to position the female first (left side) in the…

Question #5: Assume that two genes are identified that confer gametophytic facultative apomixis in soybean. The genes show independent assortment. Recessive alleles at both loci are required for the facultative apomixis. Facultative apomixis is triggered when the temperature at pollination is above 20 degrees C. At temperatures below 20 degrees C, all reproduction is sexual, independent of genotype. A facultative apomict male, capable of producing viable pollen, was crossed with a sexually reproducing female. Assuming the parents are completely inbred, what are the predicted phenotypic ratios (apomict: non-apomict) for the F1, F2, and DH (F1-derived) generations at each of the following temperatures*: a) 15°C? b) 25°C? *for full credit, show crosses and genotypes where appropriate. Remember to position the female first (left side) in the cross. Type your answer here:

Answer 2

Question

Chapter 42, Problem 1.1Q

Summary Introduction

To determine: The way in which NPP serves to measure the flux of materials as well as energy through an ecosystem.

Introduction: Net primary productivity (NPP) is the rate at which the chemical energy produced by plants is stored in the tissues of the primary producers. The GPP is always greater than NPP.

Expert Solution & Answer

Explanation of Solution

Aspects of ecosystem functions are the complex processes through which various components share and precisely transform materials and resources. The direct relation between energy and materials implies that net primary productivity is a basic measure of the level at which energy and material flow between the abiotic and biotic components of a particular ecosystem. NPP tells about the specific composition of flow of matter across various trophic levels.

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Answer 3

Question

Chapter 42, Problem 1.1Q

Summary Introduction

To determine: The way in which NPP serves to measure the flux of materials as well as energy through an ecosystem.

Introduction: Net primary productivity (NPP) is the rate at which the chemical energy produced by plants is stored in the tissues of the primary producers. The GPP is always greater than NPP.

Expert Solution & Answer

Explanation of Solution

Aspects of ecosystem functions are the complex processes through which various components share and precisely transform materials and resources. The direct relation between energy and materials implies that net primary productivity is a basic measure of the level at which energy and material flow between the abiotic and biotic components of a particular ecosystem. NPP tells about the specific composition of flow of matter across various trophic levels.

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Answer 4

Question

Chapter 42, Problem 1.1Q

Summary Introduction

To determine: The way in which NPP serves to measure the flux of materials as well as energy through an ecosystem.

Introduction: Net primary productivity (NPP) is the rate at which the chemical energy produced by plants is stored in the tissues of the primary producers. The GPP is always greater than NPP.

Expert Solution & Answer

Explanation of Solution

Aspects of ecosystem functions are the complex processes through which various components share and precisely transform materials and resources. The direct relation between energy and materials implies that net primary productivity is a basic measure of the level at which energy and material flow between the abiotic and biotic components of a particular ecosystem. NPP tells about the specific composition of flow of matter across various trophic levels.

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Answer 5

Chapter 42, Problem 1.1Q

Summary Introduction

To determine: The way in which NPP serves to measure the flux of materials as well as energy through an ecosystem.

Introduction: Net primary productivity (NPP) is the rate at which the chemical energy produced by plants is stored in the tissues of the primary producers. The GPP is always greater than NPP.

Expert Solution & Answer

Explanation of Solution

Aspects of ecosystem functions are the complex processes through which various components share and precisely transform materials and resources. The direct relation between energy and materials implies that net primary productivity is a basic measure of the level at which energy and material flow between the abiotic and biotic components of a particular ecosystem. NPP tells about the specific composition of flow of matter across various trophic levels.

Answer 6

Chapter 42, Problem 1.1Q

Summary Introduction

To determine: The way in which NPP serves to measure the flux of materials as well as energy through an ecosystem.

Introduction: Net primary productivity (NPP) is the rate at which the chemical energy produced by plants is stored in the tissues of the primary producers. The GPP is always greater than NPP.

Expert Solution & Answer

Explanation of Solution

Aspects of ecosystem functions are the complex processes through which various components share and precisely transform materials and resources. The direct relation between energy and materials implies that net primary productivity is a basic measure of the level at which energy and material flow between the abiotic and biotic components of a particular ecosystem. NPP tells about the specific composition of flow of matter across various trophic levels.

Answer 7

Chapter 42, Problem 1.1Q

Summary Introduction

To determine: The way in which NPP serves to measure the flux of materials as well as energy through an ecosystem.

Introduction: Net primary productivity (NPP) is the rate at which the chemical energy produced by plants is stored in the tissues of the primary producers. The GPP is always greater than NPP.

Answer 8

Expert Solution & Answer

Explanation of Solution

Aspects of ecosystem functions are the complex processes through which various components share and precisely transform materials and resources. The direct relation between energy and materials implies that net primary productivity is a basic measure of the level at which energy and material flow between the abiotic and biotic components of a particular ecosystem. NPP tells about the specific composition of flow of matter across various trophic levels.