The tree species that was most often killed by A. ostoyae and least affected by it in control forests. Introduction: Parasitic fungi attack plants and withdraw nutrients from them. Armillaria ostoyae (honey mushroom) is an example of fungal parasite . They attack the root systems of living trees. When the tree dies, the fungal parasite survives on the dead remains. The hyphae that grow from roots of infected trees and dead stumps invade roots of healthy plants leading to infection.

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Answer 1

Question

Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 23, Problem 1DAA

Summary Introduction

To determine: The tree species that was most often killed by A. ostoyae and least affected by it in control forests.

Introduction: Parasitic fungi attack plants and withdraw nutrients from them. Armillaria ostoyae (honey mushroom) is an example of fungal parasite. They attack the root systems of living trees. When the tree dies, the fungal parasite survives on the dead remains. The hyphae that grow from roots of infected trees and dead stumps invade roots of healthy plants leading to infection.

Expert Solution & Answer

Answer to Problem 1DAA

Correct answer: Larch tree species were most often killed by A. ostoyae, while birch trees were the least affected.

Explanation of Solution

A. ostoyae is a parasite of both living and dead trees. As given in the problem statement, Canadian forest pathologists tested their hypothesis that removing stumps after logging could help to prevent tree deaths. They made an experimental design. They removed stumps after logging from half of a forest and left stumps in the control area. They recorded tree deaths for almost more than 20 years. Refer Fig. 23.16, “Effect of stump removal on the spread of a fungal pathogen”, in the textbook. The graphical representation showed that long-term study of logging practices affects tree deaths by A. ostoyae. The experimental forest trees including stumps were removed and are shown as brown bars, and the control forest trees with stumps left behind are shown as blue bars. The data for percent cumulative mortality show that Larch tree species were often killed by A. ostoyae (approximately 27 %) in control forests. The tree species in control forests that were least affected by A. ostoyae were Birch trees (approximately 1 %).

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*Example 2: Tracing the path of an autosomal dominant trait Trait: Neurofibromatosis Forms of the trait: The dominant form is neurofibromatosis, caused by the production of an abnormal form of the protein neurofibromin. Affected individuals show spots of abnormal skin pigmentation and non-cancerous tumors that can interfere with the nervous system and cause blindness. Some tumors can convert to a cancerous form. i The recessive form is a normal protein - in other words, no neurofibromatosis.moovi A typical pedigree for a family that carries neurofibromatosis is shown below. Note that carriers are not indicated with half-colored shapes in this chart. Use the letter "N" to indicate the dominant neurofibromatosis allele, and the letter "n" for the normal allele. Nn nn nn 2 nn Nn A 3 N-

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Answer 2

Question

Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 23, Problem 1DAA

Summary Introduction

To determine: The tree species that was most often killed by A. ostoyae and least affected by it in control forests.

Introduction: Parasitic fungi attack plants and withdraw nutrients from them. Armillaria ostoyae (honey mushroom) is an example of fungal parasite. They attack the root systems of living trees. When the tree dies, the fungal parasite survives on the dead remains. The hyphae that grow from roots of infected trees and dead stumps invade roots of healthy plants leading to infection.

Expert Solution & Answer

Answer to Problem 1DAA

Correct answer: Larch tree species were most often killed by A. ostoyae, while birch trees were the least affected.

Explanation of Solution

A. ostoyae is a parasite of both living and dead trees. As given in the problem statement, Canadian forest pathologists tested their hypothesis that removing stumps after logging could help to prevent tree deaths. They made an experimental design. They removed stumps after logging from half of a forest and left stumps in the control area. They recorded tree deaths for almost more than 20 years. Refer Fig. 23.16, “Effect of stump removal on the spread of a fungal pathogen”, in the textbook. The graphical representation showed that long-term study of logging practices affects tree deaths by A. ostoyae. The experimental forest trees including stumps were removed and are shown as brown bars, and the control forest trees with stumps left behind are shown as blue bars. The data for percent cumulative mortality show that Larch tree species were often killed by A. ostoyae (approximately 27 %) in control forests. The tree species in control forests that were least affected by A. ostoyae were Birch trees (approximately 1 %).

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Answer 3

Question

Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 23, Problem 1DAA

Summary Introduction

To determine: The tree species that was most often killed by A. ostoyae and least affected by it in control forests.

Introduction: Parasitic fungi attack plants and withdraw nutrients from them. Armillaria ostoyae (honey mushroom) is an example of fungal parasite. They attack the root systems of living trees. When the tree dies, the fungal parasite survives on the dead remains. The hyphae that grow from roots of infected trees and dead stumps invade roots of healthy plants leading to infection.

Expert Solution & Answer

Answer to Problem 1DAA

Correct answer: Larch tree species were most often killed by A. ostoyae, while birch trees were the least affected.

Explanation of Solution

A. ostoyae is a parasite of both living and dead trees. As given in the problem statement, Canadian forest pathologists tested their hypothesis that removing stumps after logging could help to prevent tree deaths. They made an experimental design. They removed stumps after logging from half of a forest and left stumps in the control area. They recorded tree deaths for almost more than 20 years. Refer Fig. 23.16, “Effect of stump removal on the spread of a fungal pathogen”, in the textbook. The graphical representation showed that long-term study of logging practices affects tree deaths by A. ostoyae. The experimental forest trees including stumps were removed and are shown as brown bars, and the control forest trees with stumps left behind are shown as blue bars. The data for percent cumulative mortality show that Larch tree species were often killed by A. ostoyae (approximately 27 %) in control forests. The tree species in control forests that were least affected by A. ostoyae were Birch trees (approximately 1 %).

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Answer 4

Question

Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 23, Problem 1DAA

Summary Introduction

To determine: The tree species that was most often killed by A. ostoyae and least affected by it in control forests.

Introduction: Parasitic fungi attack plants and withdraw nutrients from them. Armillaria ostoyae (honey mushroom) is an example of fungal parasite. They attack the root systems of living trees. When the tree dies, the fungal parasite survives on the dead remains. The hyphae that grow from roots of infected trees and dead stumps invade roots of healthy plants leading to infection.

Expert Solution & Answer

Answer to Problem 1DAA

Correct answer: Larch tree species were most often killed by A. ostoyae, while birch trees were the least affected.

Explanation of Solution

A. ostoyae is a parasite of both living and dead trees. As given in the problem statement, Canadian forest pathologists tested their hypothesis that removing stumps after logging could help to prevent tree deaths. They made an experimental design. They removed stumps after logging from half of a forest and left stumps in the control area. They recorded tree deaths for almost more than 20 years. Refer Fig. 23.16, “Effect of stump removal on the spread of a fungal pathogen”, in the textbook. The graphical representation showed that long-term study of logging practices affects tree deaths by A. ostoyae. The experimental forest trees including stumps were removed and are shown as brown bars, and the control forest trees with stumps left behind are shown as blue bars. The data for percent cumulative mortality show that Larch tree species were often killed by A. ostoyae (approximately 27 %) in control forests. The tree species in control forests that were least affected by A. ostoyae were Birch trees (approximately 1 %).

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Answer 5

Chapter 23, Problem 1DAA

Summary Introduction

To determine: The tree species that was most often killed by A. ostoyae and least affected by it in control forests.

Introduction: Parasitic fungi attack plants and withdraw nutrients from them. Armillaria ostoyae (honey mushroom) is an example of fungal parasite. They attack the root systems of living trees. When the tree dies, the fungal parasite survives on the dead remains. The hyphae that grow from roots of infected trees and dead stumps invade roots of healthy plants leading to infection.

Expert Solution & Answer

Answer to Problem 1DAA

Correct answer: Larch tree species were most often killed by A. ostoyae, while birch trees were the least affected.

Explanation of Solution

A. ostoyae is a parasite of both living and dead trees. As given in the problem statement, Canadian forest pathologists tested their hypothesis that removing stumps after logging could help to prevent tree deaths. They made an experimental design. They removed stumps after logging from half of a forest and left stumps in the control area. They recorded tree deaths for almost more than 20 years. Refer Fig. 23.16, “Effect of stump removal on the spread of a fungal pathogen”, in the textbook. The graphical representation showed that long-term study of logging practices affects tree deaths by A. ostoyae. The experimental forest trees including stumps were removed and are shown as brown bars, and the control forest trees with stumps left behind are shown as blue bars. The data for percent cumulative mortality show that Larch tree species were often killed by A. ostoyae (approximately 27 %) in control forests. The tree species in control forests that were least affected by A. ostoyae were Birch trees (approximately 1 %).

Answer 6

Chapter 23, Problem 1DAA

Summary Introduction

To determine: The tree species that was most often killed by A. ostoyae and least affected by it in control forests.

Introduction: Parasitic fungi attack plants and withdraw nutrients from them. Armillaria ostoyae (honey mushroom) is an example of fungal parasite. They attack the root systems of living trees. When the tree dies, the fungal parasite survives on the dead remains. The hyphae that grow from roots of infected trees and dead stumps invade roots of healthy plants leading to infection.

Expert Solution & Answer

Answer to Problem 1DAA

Correct answer: Larch tree species were most often killed by A. ostoyae, while birch trees were the least affected.

Explanation of Solution

A. ostoyae is a parasite of both living and dead trees. As given in the problem statement, Canadian forest pathologists tested their hypothesis that removing stumps after logging could help to prevent tree deaths. They made an experimental design. They removed stumps after logging from half of a forest and left stumps in the control area. They recorded tree deaths for almost more than 20 years. Refer Fig. 23.16, “Effect of stump removal on the spread of a fungal pathogen”, in the textbook. The graphical representation showed that long-term study of logging practices affects tree deaths by A. ostoyae. The experimental forest trees including stumps were removed and are shown as brown bars, and the control forest trees with stumps left behind are shown as blue bars. The data for percent cumulative mortality show that Larch tree species were often killed by A. ostoyae (approximately 27 %) in control forests. The tree species in control forests that were least affected by A. ostoyae were Birch trees (approximately 1 %).

Answer 7

Chapter 23, Problem 1DAA

Summary Introduction

To determine: The tree species that was most often killed by A. ostoyae and least affected by it in control forests.

Introduction: Parasitic fungi attack plants and withdraw nutrients from them. Armillaria ostoyae (honey mushroom) is an example of fungal parasite. They attack the root systems of living trees. When the tree dies, the fungal parasite survives on the dead remains. The hyphae that grow from roots of infected trees and dead stumps invade roots of healthy plants leading to infection.

Answer 8

Expert Solution & Answer

Answer to Problem 1DAA

Correct answer: Larch tree species were most often killed by A. ostoyae, while birch trees were the least affected.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Explanation of Solution

A. ostoyae is a parasite of both living and dead trees. As given in the problem statement, Canadian forest pathologists tested their hypothesis that removing stumps after logging could help to prevent tree deaths. They made an experimental design. They removed stumps after logging from half of a forest and left stumps in the control area. They recorded tree deaths for almost more than 20 years. Refer Fig. 23.16, “Effect of stump removal on the spread of a fungal pathogen”, in the textbook. The graphical representation showed that long-term study of logging practices affects tree deaths by A. ostoyae. The experimental forest trees including stumps were removed and are shown as brown bars, and the control forest trees with stumps left behind are shown as blue bars. The data for percent cumulative mortality show that Larch tree species were often killed by A. ostoyae (approximately 27 %) in control forests. The tree species in control forests that were least affected by A. ostoyae were Birch trees (approximately 1 %).

Answer 12

Ch. 23 - Prob. 1DAA Ch. 23 - Prob. 2DAA Ch. 23 - Prob. 3DAA Ch. 23 - Prob. 1SQ Ch. 23 - Most fungi obtain nutrients from _____. a....Ch. 23 - Prob. 3SQ Ch. 23 - The yeasts whose fermentation activity produces...Ch. 23 - Prob. 5SQ Ch. 23 - Prob. 6SQ Ch. 23 - Prob. 7SQ

Concept explainers

Answer to Problem 1DAA

Explanation of Solution

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Chapter 23 Solutions