Chapter 22 Online Study Guide

2.

From 22-1. Which of the following factors does not decrease biodiversity

Introduction of alien species
Geographic isolation
Environmental stress
Moderate environmental disturbances
Extreme envrionmental conditions

Correct Answer

A. Moderate environmental disturbances

Explanation

Moderate environmental disturbances do not decrease biodiversity because they can actually promote it. These disturbances create opportunities for new species to colonize and thrive in the changed environment. They can also prevent dominant species from monopolizing resources, allowing a greater variety of species to coexist. Additionally, moderate disturbances can create diverse habitats with a range of microclimates, providing niches for different species to inhabit. Therefore, moderate environmental disturbances can enhance biodiversity rather than decrease it.

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3.

From 22-1. According to the 2000 joint study be several scientific groups - apprxoimately what percentage of the worlds amphibians are threatened with extinction

75%
50%
25%
10%
90%

Correct Answer

A. 25%

Explanation

According to a joint study conducted by several scientific groups in 2000, approximately 25% of the world's amphibians are threatened with extinction. This means that a significant portion of amphibian species are at risk of disappearing from the planet. The study highlights the urgent need for conservation efforts to protect these vulnerable creatures and their habitats.

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4.

Read Connections on page 553. What is expected to pose the greatest threat to freshwater ecosystems (especially lakes)

Pollution
Loss of wetlands
Invasive species
Panthers
Overharvesting

Correct Answer

A. Invasive species

Explanation

Invasive species are expected to pose the greatest threat to freshwater ecosystems, especially lakes. These species, which are non-native and introduced into an ecosystem, can outcompete native species for resources and disrupt the balance of the ecosystem. They can cause significant damage to the habitat, alter the food chain, and reduce biodiversity. Invasive species can reproduce rapidly and spread quickly, making it difficult to control their population and mitigate their impact on freshwater ecosystems.

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5.

Read 22-2. Which of the following would best describe the disappearance of horned lizards from Fort Worth?

Biological extinction
Ecological extinction
Local extinction
Background extinction

Correct Answer

A. Local extinction

Explanation

The disappearance of horned lizards from Fort Worth would best be described as a local extinction. This means that the species is no longer present in a specific area, in this case, Fort Worth. It does not imply that the species is extinct globally or everywhere else, but only within the local region.

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6.

Which of the following is not an endangered or threatened species shown in figure 22-7?

Humpback whale
Hawksbill sea turtle
Kirtlands warblers
Gray wolf
Smallmouth salamander

Correct Answer

A. Smallmouth salamander

Explanation

The smallmouth salamander is not an endangered or threatened species shown in figure 22-7. This means that the other species mentioned in the question - the humpback whale, hawksbill sea turtle, Kirtland's warblers, and gray wolf - are all endangered or threatened.

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7.

Read the case study on bats. Which of the following fruits is NOT a result of bat pollination?

Banannas
Figs
Dates
Strawberries
Mangos

Correct Answer

A. Strawberries

Explanation

Strawberries are not a result of bat pollination. While bats play a crucial role in pollinating many fruits, such as bananas, figs, dates, and mangos, strawberries are primarily pollinated by insects, such as bees. Therefore, strawberries do not rely on bats for their pollination process.

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8.

Read 22-3. Which of the following is a NON Utilitarian value of biodiversity?

Goods
Information
Option
Recreation
Bequest

Correct Answer

A. Bequest

Explanation

A bequest refers to the act of leaving something, usually property or money, to someone in a will. In the context of biodiversity, a bequest does not directly contribute to the utilitarian value of biodiversity, which is focused on the practical benefits it provides to humans such as goods, information, option, and recreation. Instead, a bequest represents a non-utilitarian value as it relates to the desire to preserve biodiversity for future generations or for its intrinsic value, rather than for any immediate practical benefits.

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9.

Read 22-6. Managing wildlife is critical to conservation biology. Managment plans are based on which of the following principles?

Ecological succession
Wildlife population dynamics
An understanding of the cover, food, water, space and other habitat needs of each species to be managed
The maximum sustained yield of a population, in which harvested individuals are not removed fast than they can be replaced through reproduction
All of the above are used in creating effective management plans

Correct Answer

A. All of the above are used in creating effective management plans

Explanation

Effective management plans for wildlife conservation are based on multiple principles. One principle is ecological succession, which refers to the predictable changes in species composition and community structure over time. Another principle is wildlife population dynamics, which involves studying the fluctuations in population size and understanding factors that influence population growth or decline. Additionally, management plans consider the habitat needs of each species, including cover, food, water, and space. Lastly, the principle of maximum sustained yield ensures that the harvest of individuals does not exceed the population's reproductive capacity. Therefore, all of these principles are used in creating effective management plans.

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10.

Read 22-6. The population of white tailed deer in the United States went from 500,000 in 1900 to ___ in 2000.

25-30 million
1-5 million
6-10 million
12-16 million
The population has shrunk below 500,000

Correct Answer

A. 25-30 million

Explanation

The correct answer is 25-30 million. The question asks about the population of white-tailed deer in the United States in the year 2000. The answer choice 25-30 million indicates that the population of white-tailed deer in the United States had grown significantly from 500,000 in 1900 to a range of 25-30 million in 2000.

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11.

Read 22-5. There is some very important legislation reagrding endangered animals. Which of the following laws would you be breaking if you carried a feather of the endangered California Condor from Michigan into Ohio?

Endangered species act
Montreal protocol
Kyoto treaty
Lacey act
USFWS

Correct Answer

A. Lacey act

Explanation

The Lacey Act is the correct answer because it is a U.S. federal law that prohibits the trade of wildlife, fish, and plants that have been illegally taken, possessed, transported, or sold. The act aims to protect both domestic and foreign species, including endangered animals like the California Condor. Carrying a feather of the endangered condor from one state to another without proper authorization would be a violation of the Lacey Act.

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12.

It doesn't take a rocket scientist to know that decisions reagrding an endangered species should be based on biology, NOT economic or political reasons. Unfortunatley decisions are normally made by rich politicians that know nothing about the animals or plants. What branch of the government is responsible for listing species as endangered and/or threatened?

USDA
FDA
USFWS
USDA
CITES

Correct Answer

A. USFWS

Explanation

The correct answer is USFWS. The USFWS, or the United States Fish and Wildlife Service, is responsible for listing species as endangered and/or threatened. This agency focuses on the conservation and management of fish, wildlife, and plants, and their decisions are based on biology rather than economic or political reasons. Unlike rich politicians, the USFWS has the expertise and knowledge about animals and plants to make informed decisions regarding endangered species.

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13.

Read 22-4. Feral pigs are a huge problem throughout the US, and Texas is no exception. It is legal to kill hogs at anytime of the year, except on wildlife management areas in Texas. For some bizarre reason the Wildlife Managment Areas in Texas only allow harvesting of feral hogs during seasons! These are introduced, incredibly destructive nonnative species - so this makes absolutely no sense. Approximately how long ago do we think domesticated pigs (which escaped becoming feral pigs) arrived in the U.S?

200 years ago
100 years ago
450 years ago
300 years ago
275 years ago

Correct Answer

A. 450 years ago

Explanation

The correct answer is 450 years ago. The passage mentions that domesticated pigs arrived in the U.S. and eventually became feral pigs. Since the passage does not provide an exact time frame, we can infer that it was approximately 450 years ago based on the options given.

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14.

Chapter 22 Online Study Guide

Read the first page of Chapter 22. Where did the name "stool pigeon" come from?

Quiz Preview

From 22-1. Which of the following factors does not decrease biodiversity

From 22-1. According to the 2000 joint study be several scientific groups - apprxoimately what percentage of the worlds amphibians are threatened with extinction

Read Connections on page 553. What is expected to pose the greatest threat to freshwater ecosystems (especially lakes)

Read 22-2. Which of the following would best describe the disappearance of horned lizards from Fort Worth?

Which of the following is not an endangered or threatened species shown in figure 22-7?

Read the case study on bats. Which of the following fruits is NOT a result of bat pollination?

Read 22-3. Which of the following is a NON Utilitarian value of biodiversity?

Read 22-6. Managing wildlife is critical to conservation biology. Managment plans are based on which of the following principles?

Read 22-6. The population of white tailed deer in the United States went from 500,000 in 1900 to ___ in 2000.

Read 22-5. There is some very important legislation reagrding endangered animals. Which of the following laws would you be breaking if you carried a feather of the endangered California Condor from Michigan into Ohio?

Read the section on Kudzu and answer the critical thinking question(s). Answer in at least 4 sentences.