Question 1

Although irrigation improves crop production in the long term it can irreparably damage cropland when

Accepted Answer

A)  critical nutrients are leeched from the soil in irrigation water. 
B)  irrigation water disperses pathogen, like Salmonella, onto the crop. 
C)  salts accumulate after the irrigation water evaporates. 
D)  irrigation water washes away the topsoil. 
A)  critical nutrients are leeched from the soil in irrigation water. 
B)  irrigation water disperses pathogen, like Salmonella, onto the crop. 
C)  salts accumulate after the irrigation water evaporates. 
D)  irrigation water washes away the topsoil. C

Question 2

Planting a diversity of crops leaves the mature plants more vulnerable to disease and crop pests.

Accepted Answer

A) True 
 B)False  False

Question 3

Increasing yields can be challenging because manipulating a plant to divert more energy into its reproductive structures like fruits and seeds leaves means less energy for root and stem growth. One consequence of this strategy is that domestic crops _______ than their wild counterparts.

Accepted Answer

A)  require more effort when planting 
B)  are more susceptible to plant diseases 
C)  are more susceptible to insect herbivores 
D)  All of the above 
A)  require more effort when planting 
B)  are more susceptible to plant diseases 
C)  are more susceptible to insect herbivores 
D)  All of the above D

Question 4

_______ farming avoids the use of synthetic chemicals and genetically modified organisms.

Accepted Answer

The answer of _______ farming avoids the use of synthetic...

Question 5

Soil erosion is typically caused by water and ____.

Accepted Answer

The answer of Soil erosion is typically caused by water...

Question 6

On a per person basis, world production of rice, wheat, and corn has declined since the 1980s.

Accepted Answer

A) True 
 B)False

Question 7

The Green Revolution is a response to combat the increased levels of carbon dioxide in the atmosphere.

Accepted Answer

A) True 
 B)False

Question 8

Drip irrigation produces high yields but requires larger volumes of water than other methods of irrigation.

Accepted Answer

A) True 
 B)False

Question 9

All of the energy (calories) consumed by humans originated in sunlight and were initially made available through the process of

Accepted Answer

A)  plant respiration. 
B)  plant photosynthesis. 
C)  decomposition and nutrient cycling. 
D)  all of the above contribute equally. 
A)  plant respiration. 
B)  plant photosynthesis. 
C)  decomposition and nutrient cycling. 
D)  all of the above contribute equally.

Question 10

The dramatic increase in agricultural productivity over the last 50 years is referred to as the ________________.

Accepted Answer

The answer of The dramatic increase in agricultural productivity over...

Question 11

Humans have historically obtained food from which three main food systems?

Accepted Answer

A)  cropland, rain forests, and rangelands 
B)  rain forest, grasslands, and forests 
C)  oceanic fisheries, coastal intertidal habitats, and grasslands 
D)  rangelands, croplands, and oceanic fisheries 
A)  cropland, rain forests, and rangelands 
B)  rain forest, grasslands, and forests 
C)  oceanic fisheries, coastal intertidal habitats, and grasslands 
D)  rangelands, croplands, and oceanic fisheries

Question 12

Some strains of crops, called Bt crops, have been genetically modified to resist _______

Accepted Answer

A)  drought. 
B)  salty soil. 
C)  viral attack. 
D)  insect pests. 
A)  drought. 
B)  salty soil. 
C)  viral attack. 
D)  insect pests.

Question 13

Before amaranth can become an important commercial crop several problems must be overcome; one of the most serious problems is its

Accepted Answer

A)  vulnerability to pest species. 
B)  inability to tolerate acidic soils. 
C)  large and heavy seeds that damage conventional harvesting equipment. 
D)  potential to escape cultivation and compete with native grasses. 
A)  vulnerability to pest species. 
B)  inability to tolerate acidic soils. 
C)  large and heavy seeds that damage conventional harvesting equipment. 
D)  potential to escape cultivation and compete with native grasses.

Question 14

Modern agriculture can easily support an ever-growing human population.

Accepted Answer

A) True 
 B)False

Question 15

The advantage of precision farming in contrast to conventional farming is the

Accepted Answer

A)  strict avoidance of synthetic chemicals. 
B)  use of technology to identify the appropriate areas to receive pesticide, fertilizer, or irrigation water. 
C)  use of synthetic fertilizers rather than natural fertilizers. 
D)  use of GPS systems to plant perfectly straight rows that allow harvesting equipment to recover a larger percentage of the crop. 
A)  strict avoidance of synthetic chemicals. 
B)  use of technology to identify the appropriate areas to receive pesticide, fertilizer, or irrigation water. 
C)  use of synthetic fertilizers rather than natural fertilizers. 
D)  use of GPS systems to plant perfectly straight rows that allow harvesting equipment to recover a larger percentage of the crop.

Question 16

Plant breeding remains one of the most promising means of increasing yields, even with progress in genetic engineering, because genetic engineering

Accepted Answer

A)  works on very few plant varieties while breeding works with all plants. 
B)  involves those genes that have small effects while breeding involves genes with large effects. 
C)  improves plants by reducing the requirement for pollinators. 
D)  works on single genes while breeding involves many genes, often including some not yet identified. 
A)  works on very few plant varieties while breeding works with all plants. 
B)  involves those genes that have small effects while breeding involves genes with large effects. 
C)  improves plants by reducing the requirement for pollinators. 
D)  works on single genes while breeding involves many genes, often including some not yet identified.

Question 17

One of the most important reasons for maintaining biodiversity is the possibility that wild strains of domesticated crops may contain valuable genes that could be bred into the crop.

Accepted Answer

A) True 
 B)False

Question 18

One downside of grass pea as a food is

Accepted Answer

A)  its horrid taste. 
B)  it is poisonous. 
C)  it is too fibrous to chew. 
D)  it can't grow in dry climates. 
A)  its horrid taste. 
B)  it is poisonous. 
C)  it is too fibrous to chew. 
D)  it can't grow in dry climates.

Question 19

In the United States corn hybrids have increased yields by as much as six times.

Accepted Answer

A) True 
 B)False

Question 20

All of the following except ________ is a step needed to end world hunger?

Accepted Answer

A)  increasing the investment in poor farmers 
B)  making access to world markets more fair 
C)  producing more animal protein 
D)  creating new ways to distribute food 
A)  increasing the investment in poor farmers 
B)  making access to world markets more fair 
C)  producing more animal protein 
D)  creating new ways to distribute food

Exam 44: Feeding a Hungry Planet

Although irrigation improves crop production in the long term it can irreparably damage cropland when

Planting a diversity of crops leaves the mature plants more vulnerable to disease and crop pests.

Increasing yields can be challenging because manipulating a plant to divert more energy into its reproductive structures like fruits and seeds leaves means less energy for root and stem growth. One consequence of this strategy is that domestic crops _______ than their wild counterparts.

_______ farming avoids the use of synthetic chemicals and genetically modified organisms.

Soil erosion is typically caused by water and ____.

On a per person basis, world production of rice, wheat, and corn has declined since the 1980s.

The Green Revolution is a response to combat the increased levels of carbon dioxide in the atmosphere.

Drip irrigation produces high yields but requires larger volumes of water than other methods of irrigation.

All of the energy (calories) consumed by humans originated in sunlight and were initially made available through the process of

The dramatic increase in agricultural productivity over the last 50 years is referred to as the ________________.

Humans have historically obtained food from which three main food systems?

Some strains of crops, called Bt crops, have been genetically modified to resist _______

Before amaranth can become an important commercial crop several problems must be overcome; one of the most serious problems is its

Modern agriculture can easily support an ever-growing human population.

The advantage of precision farming in contrast to conventional farming is the

Plant breeding remains one of the most promising means of increasing yields, even with progress in genetic engineering, because genetic engineering

One of the most important reasons for maintaining biodiversity is the possibility that wild strains of domesticated crops may contain valuable genes that could be bred into the crop.

One downside of grass pea as a food is

In the United States corn hybrids have increased yields by as much as six times.

All of the following except ________ is a step needed to end world hunger?

The Nature of Science and the Characteristics of Life

Organizing the Diversity of Life

Major Groups of Living Organisms

Chemical Building Blocks

Cell Structure and Internal Compartments

Cell Membranes, Transport, and Communication

Energy and Enzymes

Photosynthesis and Cellular Respiration

Cell Division

Patterns of Inheritance

Chromosomes and Human Genetics

DNA

From Gene to Protein

Control of Gene Expression

DNA Technology

How Evolution Works

Evolution of Populations

Adaptation and Speciation

The Evolutionary History of Life

Maintaining the Internal Environment

Animal Nutrition and Digestion

Gas Exchange

The Circulatory System

Animal Hormones

The Nervous System

Sensing the Environment

Skeletons, Muscles, and Movement

Defenses against Disease

Reproduction and Development

Animal Behavior

Plant Structure, Nutrition, and Transport

Plant Growth and Reproduction

The Biosphere

Growth of Populations

Interactions among Organisms

Communities of Organisms

Ecosystems

Global Change

Biodiversity and People

Cancer: Cell Division Out of Control

Harnessing the Human Genome

Humans and Evolution

Smoking--Beyond Lung Cancer

Building a Sustainable Society

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