Question 1

Which of the following foods would make you a quaternary consumer?

Accepted Answer

A)  lentils 
B)  chicken 
C)  shark steak 
D)  all of the above 
E)  none of the above 
A)  lentils 
B)  chicken 
C)  shark steak 
D)  all of the above 
E)  none of the above C

Question 2

A low soil pH ________.

Accepted Answer

A)  helps the soil retain nutrients 
B)  displaces negatively charged nutrients 
C)  displaces positively charged nutrients 
D)  promotes percolation 
A)  helps the soil retain nutrients 
B)  displaces negatively charged nutrients 
C)  displaces positively charged nutrients 
D)  promotes percolation C

Question 3

Which of the following is not one of the four primary components of fertile soil?

Accepted Answer

A)  water 
B)  air 
C)  mineral particles 
D)  organic matter 
E)  All of the above are components. 
A)  water 
B)  air 
C)  mineral particles 
D)  organic matter 
E)  All of the above are components. E

Question 4

Which of the following is the source of organic components in soils?

Accepted Answer

A)  clay 
B)  sand 
C)  silt 
D)  mineral particles 
E)  humus 
A)  clay 
B)  sand 
C)  silt 
D)  mineral particles 
E)  humus

Question 5

Eating which of the following foods would make you a primary consumer?

Accepted Answer

A)  lentils 
B)  chicken 
C)  shark steak 
D)  all of the above 
E)  none of the above 
A)  lentils 
B)  chicken 
C)  shark steak 
D)  all of the above 
E)  none of the above

Question 6

When only synthetic fertilizers are used on a crop, the quantity used needs to be increased over time because ________.

Accepted Answer

A)  they are washed away by seasonal rains, but residual fertilizers remain 
B)  organisms in the soil develop a resistance to these fertilizers 
C)  more and more genetically engineered crops are being planted 
D)  synthetic fertilizers provide no organic bulk 
A)  they are washed away by seasonal rains, but residual fertilizers remain 
B)  organisms in the soil develop a resistance to these fertilizers 
C)  more and more genetically engineered crops are being planted 
D)  synthetic fertilizers provide no organic bulk

Question 7

Which of the following soil horizons would be structurally the most similar to bedrock?

Accepted Answer

A)  substratum 
B)  subsoil 
C)  topsoil 
D)  bottom soil 
E)  humus 
A)  substratum 
B)  subsoil 
C)  topsoil 
D)  bottom soil 
E)  humus

Question 8

Nicotine solutions are available from lawn and garden stores as an insecticide. Why must gardeners handle this product with extreme care?

Accepted Answer

A)  These solutions are also toxic to plants, thus the gardeners must be careful not to apply too much. 
B)  These solutions are as toxic to humans as they are to insects. 
C)  These solutions are very effective, but also very expensive. 
D)  In some brands, the nicotine solutions also serves as a carrier for radioactive isotopes. 
A)  These solutions are also toxic to plants, thus the gardeners must be careful not to apply too much. 
B)  These solutions are as toxic to humans as they are to insects. 
C)  These solutions are very effective, but also very expensive. 
D)  In some brands, the nicotine solutions also serves as a carrier for radioactive isotopes.

Question 9

What is the approximate percentage of grain production in the U.S that is used for feeding livestock?

Accepted Answer

A)  70 percent 
B)  90 percent 
C)  50 percent 
D)  30 percent 
E)  10 percent 
A)  70 percent 
B)  90 percent 
C)  50 percent 
D)  30 percent 
E)  10 percent

Question 10

Plants need nitrogen primarily so that they can build ________.

Accepted Answer

A)  carbohydrates 
B)  lipids 
C)  amino acids 
D)  vitamins 
A)  carbohydrates 
B)  lipids 
C)  amino acids 
D)  vitamins

Question 11

Which of the following is not a major fertilizer that has been obtained primarily from native sources (i.e., not synthesized by humans)?

Accepted Answer

A)  ammonia gas 
B)  saltpeter 
C)  compost 
D)  All of the above are from natural sources (some more natural than others). 
E)  none of the above 
A)  ammonia gas 
B)  saltpeter 
C)  compost 
D)  All of the above are from natural sources (some more natural than others). 
E)  none of the above

Question 12

What are the major natural sources of potassium used by plants?

Accepted Answer

A)  It is extracted from rocks. 
B)  It is formed by atmospheric reaction of potassium and oxygen during lightning strikes. 
C)  It is extracted from seawater by specialized bacteria in phytoplankton. 
D)  all of the above 
E)  only A and B 
A)  It is extracted from rocks. 
B)  It is formed by atmospheric reaction of potassium and oxygen during lightning strikes. 
C)  It is extracted from seawater by specialized bacteria in phytoplankton. 
D)  all of the above 
E)  only A and B

Question 13

Distinguish between organic farming and integrated crop management.

Accepted Answer

A)  Only organic farming aims for environmentally-friendly methods of farming. 
B)  Organic farming tends not to embrace high technology, while ICM does. 
C)  Only integrated crop management allows for the use of fertilizers. 
D)  Organic farming is more geared towards large scale production of food. 
A)  Only organic farming aims for environmentally-friendly methods of farming. 
B)  Organic farming tends not to embrace high technology, while ICM does. 
C)  Only integrated crop management allows for the use of fertilizers. 
D)  Organic farming is more geared towards large scale production of food.

Question 14

Pockets of open space in soil are necessary for plant health. If these pockets are too large, however, plant health suffers. Why?

Accepted Answer

A)  Large open pockets of air fill with carbon dioxide, which lowers the pH of the soil to unhealthy levels. 
B)  When a root encounters a large pocket of air it is less able to absorb the nutrients it needs because it is no longer in contact with the soil. 
C)  When a large pocket of air collapses it hits the root damaging it and making it more susceptible to infection. 
D)  Water is not retained well by large open spaces in the soil, which means that plant nutrients are readily leached from the soil. 
A)  Large open pockets of air fill with carbon dioxide, which lowers the pH of the soil to unhealthy levels. 
B)  When a root encounters a large pocket of air it is less able to absorb the nutrients it needs because it is no longer in contact with the soil. 
C)  When a large pocket of air collapses it hits the root damaging it and making it more susceptible to infection. 
D)  Water is not retained well by large open spaces in the soil, which means that plant nutrients are readily leached from the soil.

Question 15

Which of the following would be considered a producer?

Accepted Answer

A)  grain 
B)  grass 
C)  phytoplankton 
D)  all of the above 
E)  none of the above 
A)  grain 
B)  grass 
C)  phytoplankton 
D)  all of the above 
E)  none of the above

Question 16

Why is flooding not an efficient method of irrigation?

Accepted Answer

A)  Most of the water is lost due to run off and evaporation. 
B)  The water drowns the roots of the plants. 
C)  Moist soil does not readily absorb any more water. 
D)  Soil erosion is minimized because the flow of water is very slow. 
E)  none of the above 
A)  Most of the water is lost due to run off and evaporation. 
B)  The water drowns the roots of the plants. 
C)  Moist soil does not readily absorb any more water. 
D)  Soil erosion is minimized because the flow of water is very slow. 
E)  none of the above

Question 17

Why would a predominately meat-based diet be a severe restriction on the possible size of the human population?

Accepted Answer

A)  The hormones found in beef have a negative effect on human fertility. 
B)  Such a diet would shorten the average life span of humans. 
C)  There is not enough biochemical energy available at that trophic level to support a very large population. 
D)  The land area taken up by livestock would prevent people from finding new places to live. 
A)  The hormones found in beef have a negative effect on human fertility. 
B)  Such a diet would shorten the average life span of humans. 
C)  There is not enough biochemical energy available at that trophic level to support a very large population. 
D)  The land area taken up by livestock would prevent people from finding new places to live.

Question 18

All energy that is consumed in food is synthesized by ________.

Accepted Answer

A)  producers 
B)  consumers 
C)  herbivores 
D)  decomposers 
E)  all of the above 
A)  producers 
B)  consumers 
C)  herbivores 
D)  decomposers 
E)  all of the above

Question 19

What is the source of all the carbon in trees and other plants?

Accepted Answer

A)  carbohydrates 
B)  chlorophyll 
C)  carbon dioxide 
D)  oxygen 
E)  water 
A)  carbohydrates 
B)  chlorophyll 
C)  carbon dioxide 
D)  oxygen 
E)  water

Question 20

Which of the following describes nitrogen fixation?

Accepted Answer

A)  special bacteria converting nitrogen gas into ammonium ions 
B)  lightning causing nitrogen gas to react with oxygen gas and form nitrate ions 
C)  combustion of ammonia gas to produce nitrate ions 
D)  all of the above 
E)  A and B only 
A)  special bacteria converting nitrogen gas into ammonium ions 
B)  lightning causing nitrogen gas to react with oxygen gas and form nitrate ions 
C)  combustion of ammonia gas to produce nitrate ions 
D)  all of the above 
E)  A and B only

Which of the following foods would make you a quaternary consumer?

A low soil pH ________.

Which of the following is not one of the four primary components of fertile soil?

Which of the following is the source of organic components in soils?

Eating which of the following foods would make you a primary consumer?

When only synthetic fertilizers are used on a crop, the quantity used needs to be increased over time because ________.

Which of the following soil horizons would be structurally the most similar to bedrock?

Nicotine solutions are available from lawn and garden stores as an insecticide. Why must gardeners handle this product with extreme care?

What is the approximate percentage of grain production in the U.S that is used for feeding livestock?

Plants need nitrogen primarily so that they can build ________.

Which of the following is not a major fertilizer that has been obtained primarily from native sources (i.e., not synthesized by humans)?

What are the major natural sources of potassium used by plants?

Distinguish between organic farming and integrated crop management.

Pockets of open space in soil are necessary for plant health. If these pockets are too large, however, plant health suffers. Why?

Which of the following would be considered a producer?

Why is flooding not an efficient method of irrigation?

Why would a predominately meat-based diet be a severe restriction on the possible size of the human population?

All energy that is consumed in food is synthesized by ________.

What is the source of all the carbon in trees and other plants?

Which of the following describes nitrogen fixation?

About Science

Particles of Matter

Elements of Chemistry

Subatomic Particles

The Atomic Nucleus

How Atoms Bond

How Molecules Mix

How Water Behaves

How Chemicals React

Acids and Bases in Our Environment

Oxidations and Reductions Charge the World

Organic Compounds

Nutrients of Life

Medicinal Chemistry

Protection Water and Air Resources

Capturing Energy

Filters

Exam 15: Optimizing Food Production

Which of the following foods would make you a quaternary consumer?

A low soil pH ________.

Which of the following is not one of the four primary components of fertile soil?

Which of the following is the source of organic components in soils?

Eating which of the following foods would make you a primary consumer?

When only synthetic fertilizers are used on a crop, the quantity used needs to be increased over time because ________.

Which of the following soil horizons would be structurally the most similar to bedrock?

Nicotine solutions are available from lawn and garden stores as an insecticide. Why must gardeners handle this product with extreme care?

What is the approximate percentage of grain production in the U.S that is used for feeding livestock?

Plants need nitrogen primarily so that they can build ________.

Which of the following is not a major fertilizer that has been obtained primarily from native sources (i.e., not synthesized by humans)?

What are the major natural sources of potassium used by plants?

Distinguish between organic farming and integrated crop management.

Pockets of open space in soil are necessary for plant health. If these pockets are too large, however, plant health suffers. Why?

Which of the following would be considered a producer?

Why is flooding not an efficient method of irrigation?

Why would a predominately meat-based diet be a severe restriction on the possible size of the human population?

All energy that is consumed in food is synthesized by ________.

What is the source of all the carbon in trees and other plants?

Which of the following describes nitrogen fixation?

About Science

Particles of Matter

Elements of Chemistry

Subatomic Particles

The Atomic Nucleus

How Atoms Bond

How Molecules Mix

How Water Behaves

How Chemicals React

Acids and Bases in Our Environment

Oxidations and Reductions Charge the World

Organic Compounds

Nutrients of Life

Medicinal Chemistry

Protection Water and Air Resources

Capturing Energy

Filters