Question 1

In the technique of _ cropping, farmers do not plow, but they leave leftover cover crops in the fields after harvest to create mulch for the next year's crops.

Accepted Answer

The answer of In the technique of _ cropping, farmers...

Question 2

Adult sea turtles are primarily threatened by

Accepted Answer

A)  beach development and hunting. 
B)  polluted ocean waters. 
C)  beach development. 
D)  hunting. 
E)  beach development, hunting, and polluted ocean waters. 
A)  beach development and hunting. 
B)  polluted ocean waters. 
C)  beach development. 
D)  hunting. 
E)  beach development, hunting, and polluted ocean waters.

Question 3

The goals of conservation biologists include all of the following EXCEPT

Accepted Answer

A)  maintaining and restoring natural ecosystems. 
B)  cataloguing the number of species. 
C)  studying the natural impacts of human activities. 
D)  working toward resource sustainability. 
E)  reversing the loss of biodiversity. 
A)  maintaining and restoring natural ecosystems. 
B)  cataloguing the number of species. 
C)  studying the natural impacts of human activities. 
D)  working toward resource sustainability. 
E)  reversing the loss of biodiversity.

Question 4

Which human activity is NOT a threat to biodiversity?

Accepted Answer

A)  Building a large sugarcane plantation in a tropical rain forest 
B)  Importing pigs and goats in Hawaii for food 
C)  No- till farming 
D)  Application of synthetic fertilizers 
E)  Cattle ranching 
A)  Building a large sugarcane plantation in a tropical rain forest 
B)  Importing pigs and goats in Hawaii for food 
C)  No- till farming 
D)  Application of synthetic fertilizers 
E)  Cattle ranching

Question 5

A species that is in danger of extinction is described by the IUCN as .

Accepted Answer

The answer of A species that is in danger of...

Question 6

The most serious threat to biodiversity is habitat destruction.

Accepted Answer

A) True 
 B)False

Question 7

A species is fundamentally essential to an ecosystem; its loss changes the structure of the entire community, even though it may only represent a small portion of the population.

Accepted Answer

A)  rivet 
B)  baseline 
C)  keystone 
D)  redundant 
E)  footprint 
A)  rivet 
B)  baseline 
C)  keystone 
D)  redundant 
E)  footprint

Question 8

An introduced species is "invasive" if it

Accepted Answer

A)  cannot successfully maintain a population in the new habitat. 
B)  does not cause significant harm to native species. 
C)  survives in its new habitat and forms mutually beneficial relationships with native species. 
D)  outcompetes native species in its new habitat. 
E)  is a threat to humans. 
A)  cannot successfully maintain a population in the new habitat. 
B)  does not cause significant harm to native species. 
C)  survives in its new habitat and forms mutually beneficial relationships with native species. 
D)  outcompetes native species in its new habitat. 
E)  is a threat to humans.

Question 9

Most of the world's food supply comes from

Accepted Answer

A)  only 12 plant crops. 
B)  wild plants. 
C)  frost- resistant crops. 
D)  more than 100 rain- forest species. 
E)  salt- tolerant crops. 
A)  only 12 plant crops. 
B)  wild plants. 
C)  frost- resistant crops. 
D)  more than 100 rain- forest species. 
E)  salt- tolerant crops.

Question 10

The minimum viable population is the

Accepted Answer

A)  number of organisms that can be spread over a fragmented habitat. 
B)  smallest number of organisms capable of maintaining a population. 
C)  number of organisms produced by an inbred population. 
D)  smallest number of males needed to maintain a population. 
E)  number of organisms that can reproduce in a population. 
A)  number of organisms that can be spread over a fragmented habitat. 
B)  smallest number of organisms capable of maintaining a population. 
C)  number of organisms produced by an inbred population. 
D)  smallest number of males needed to maintain a population. 
E)  number of organisms that can reproduce in a population.

Question 11

Global climate change will cause deserts to become hotter and wetter.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following is NOT an example of how plant communities continue to support healthy ecosystems?

Accepted Answer

A)  Plants increase levels of CO2, by releasing CO2 as a by- product of photosynthesis. 
B)  Forests support the water cycle, through evaporation returning water to the atmosphere. 
C)  Plants prevent flooding by absorbing water through their extensive root systems. 
D)  Plant roots stabilize soil and prevent erosion. 
E)  Leafy trees provide shade, thereby reducing temperatures. 
A)  Plants increase levels of CO2, by releasing CO2 as a by- product of photosynthesis. 
B)  Forests support the water cycle, through evaporation returning water to the atmosphere. 
C)  Plants prevent flooding by absorbing water through their extensive root systems. 
D)  Plant roots stabilize soil and prevent erosion. 
E)  Leafy trees provide shade, thereby reducing temperatures.

Question 13

The discipline of measures the trade- offs between the monetary value of human developments and the loss of ecosystem services.

Accepted Answer

ecological

Question 14

In the wild, plants depend on bacteria in the soil to provide nitrogen.

Accepted Answer

A) True 
 B)False

Question 15

Forests influence local climates by

Accepted Answer

A)  increasing evaporation by blocking winds. 
B)  increasing the amount of water runoff. 
C)  releasing water into the atmosphere. 
D)  releasing carbon dioxide. 
E)  increasing the temperature via photosynthesis. 
A)  increasing evaporation by blocking winds. 
B)  increasing the amount of water runoff. 
C)  releasing water into the atmosphere. 
D)  releasing carbon dioxide. 
E)  increasing the temperature via photosynthesis.

Question 16

Coastal wetlands, or marshes, serve to

Accepted Answer

A)  "absorb" water from major storms. 
B)  return nitrogen to the atmosphere. 
C)  store phosphorus. 
D)  provide a habitat for major predators. 
E)  purify water farther upriver. 
A)  "absorb" water from major storms. 
B)  return nitrogen to the atmosphere. 
C)  store phosphorus. 
D)  provide a habitat for major predators. 
E)  purify water farther upriver.

Question 17

Comparison of the human ecological footprint to Earth's biocapacity suggests that

Accepted Answer

A)  the human population will soon rapidly decrease in size. 
B)  the human population cannot sustain its current level of resource usage. 
C)  global warming is seriously damaging most ecosystems. 
D)  the human population is growing slowly. 
E)  the human population can continue at its present level of resource usage indefinitely. 
A)  the human population will soon rapidly decrease in size. 
B)  the human population cannot sustain its current level of resource usage. 
C)  global warming is seriously damaging most ecosystems. 
D)  the human population is growing slowly. 
E)  the human population can continue at its present level of resource usage indefinitely.

Question 18

Plant roots increase the soil's capacity to hold water, so vegetation contributes to erosion and flood control.

Accepted Answer

A) True 
 B)False

Question 19

What are some benefits of sustainable development?

Accepted Answer

Sustainable development promotes long- t

Question 20

Rich consumers support sustainability and biodiversity by paying high prices for rare products, such as elephant- tusk ivory, rare orchids, and exotic birds.

Accepted Answer

A) True 
 B)False

Exam 31: Conserving Earths Biodiversity

In the technique of _ cropping, farmers do not plow, but they leave leftover cover crops in the fields after harvest to create mulch for the next year's crops.

Adult sea turtles are primarily threatened by

The goals of conservation biologists include all of the following EXCEPT

Which human activity is NOT a threat to biodiversity?

A species that is in danger of extinction is described by the IUCN as .

The most serious threat to biodiversity is habitat destruction.

A species is fundamentally essential to an ecosystem; its loss changes the structure of the entire community, even though it may only represent a small portion of the population.

An introduced species is "invasive" if it

Most of the world's food supply comes from

The minimum viable population is the

Global climate change will cause deserts to become hotter and wetter.

Which of the following is NOT an example of how plant communities continue to support healthy ecosystems?

The discipline of measures the trade- offs between the monetary value of human developments and the loss of ecosystem services.

In the wild, plants depend on bacteria in the soil to provide nitrogen.

Forests influence local climates by

Coastal wetlands, or marshes, serve to

Comparison of the human ecological footprint to Earth's biocapacity suggests that

Plant roots increase the soil's capacity to hold water, so vegetation contributes to erosion and flood control.

What are some benefits of sustainable development?

Rich consumers support sustainability and biodiversity by paying high prices for rare products, such as elephant- tusk ivory, rare orchids, and exotic birds.

An Introduction to Life on Earth

Atoms, Molecules, and Life

Biological Molecules

Cell Structure and Function

Cell Membrane Structure and Function

Energy Flow in the Life of a Cell

Capturing Solar Energy: Photosynthesis

Harvesting Energy: Glycolysis and Cellular Respiration

Cellular Reproduction

Meiosis: the Basis of Sexual Reproduction

Patterns of Inheritance

Dna: the Molecule of Heredity

Gene Expression and Regulation

Biotechnology

Principles of Evolution

How Populations Evolve

The Origin of Species

The History of Life

Systematics: Seeking Order Amid Diversity

The Diversity of Prokaryotes and Viruses

The Diversity of Protists

The Diversity of Plants

The Diversity of Fungi

Animal Diversity I: Invertebrates

Animal Diversity II: Vertebrates

Animal Behavior

Population Growth and Regulation

Community Interactions

Energy Flow and Nutrient Cycling in Ecosystems

Earths Diverse Ecosystems

Homeostasis and the Organization of the Animal Body

Circulation

Respiration

Nutrition and Digestion

The Urinary System

Defenses Against Disease

Chemical Control of the Animal Body: the Endocrine System

The Nervous System

The Senses

Action and Support: the Muscles and Skeleton

Animal Reproduction

Animal Development

Plant Anatomy and Nutrient Transport

Plant Reproduction and Development

Plant Responses to the Environment

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