Question 1

Nitrogen and potassium are acquired from

Accepted Answer

A)  the soil solution. 
B)  heterotrophs. 
C)  air. 
D)  micronutrients. 
E)  All of the above 
A)  the soil solution. 
B)  heterotrophs. 
C)  air. 
D)  micronutrients. 
E)  All of the above A

Question 2

The association of plant roots with fungi

Accepted Answer

A)  is deleterious to the plant. 
B)  retards root function. 
C)  increases nutrient uptake-especially phosphate. 
D)  provides an energy source to the plant. 
E)  decreases root surface area. 
A)  is deleterious to the plant. 
B)  retards root function. 
C)  increases nutrient uptake-especially phosphate. 
D)  provides an energy source to the plant. 
E)  decreases root surface area. C

Question 3

Most plants continuously obtain new sources of mineral nutrients by

Accepted Answer

A)  breaking down organic matter. 
B)  growing longer roots. 
C)  shading the plants below them. 
D)  evolving more elaborate photosystems. 
E)  absorbing minerals through leaves. 
A)  breaking down organic matter. 
B)  growing longer roots. 
C)  shading the plants below them. 
D)  evolving more elaborate photosystems. 
E)  absorbing minerals through leaves. B

Question 4

The process that is the opposite of nitrogen fixation is called _______.

Accepted Answer

The answer of The process that is the opposite of...

Question 5

Clay particles in soils are important for

Accepted Answer

A)  holding the soil together. 
B)  ion exchange. 
C)  holding water. 
D)  All of the above 
E)  None of the above 
A)  holding the soil together. 
B)  ion exchange. 
C)  holding water. 
D)  All of the above 
E)  None of the above

Question 6

The form of nitrogen from the soil that most plants prefer is

Accepted Answer

A)  found in amino acids. 
B)  ammonia. 
C)  N2. 
D)  nitrate. 
E)  nitrite. 
A)  found in amino acids. 
B)  ammonia. 
C)  N2. 
D)  nitrate. 
E)  nitrite.

Question 7

Most earthworms can be found in

Accepted Answer

A)  topsoil. 
B)  subsoil. 
C)  bedrock. 
D)  Both a and b 
E)  Both b and c 
A)  topsoil. 
B)  subsoil. 
C)  bedrock. 
D)  Both a and b 
E)  Both b and c

Question 8

Which of the following is an early step in the formation of both arbuscules and root nodules?

Accepted Answer

A)  Invasion of a plant root by a fungus 
B)  Invasion of a plant root by a bacterium 
C)  Strigolactones produced by the root are recognized by the microbe 
D)  Root cells are invaded but there is no direct contact between plant and microbe cell contents 
E)  Root cells are invaded and there is direct contact between plant and microbe cell contents 
A)  Invasion of a plant root by a fungus 
B)  Invasion of a plant root by a bacterium 
C)  Strigolactones produced by the root are recognized by the microbe 
D)  Root cells are invaded but there is no direct contact between plant and microbe cell contents 
E)  Root cells are invaded and there is direct contact between plant and microbe cell contents

Question 9

A tomato plants whose young leaves are very yellow, but whose older leaves are still green, most likely has a(n)_______ deficiency.

Accepted Answer

A)  nitrogen 
B)  carbon 
C)  water 
D)  iron 
E)  phosphorus 
A)  nitrogen 
B)  carbon 
C)  water 
D)  iron 
E)  phosphorus

Question 10

Most of the nitrogen on Earth is in the form of

Accepted Answer

A)  nucleic acids. 
B)  amino acids and proteins. 
C)  nitrate. 
D)  nitrogen gas. 
E)  ammonia. 
A)  nucleic acids. 
B)  amino acids and proteins. 
C)  nitrate. 
D)  nitrogen gas. 
E)  ammonia.

Question 11

One example of a nutrient in reduced form is the

Accepted Answer

A)  carbon in CO2. 
B)  hydrogen in water. 
C)  nitrogen in ammonia. 
D)  phosphorus in phosphate. 
E)  sulfur in sulfate. 
A)  carbon in CO2. 
B)  hydrogen in water. 
C)  nitrogen in ammonia. 
D)  phosphorus in phosphate. 
E)  sulfur in sulfate.

Question 12

Most clays form from the _______ of rock.

Accepted Answer

A)  mechanical weathering 
B)  chemical weathering 
C)  heaving 
D)  grinding 
E)  All of the above 
A)  mechanical weathering 
B)  chemical weathering 
C)  heaving 
D)  grinding 
E)  All of the above

Question 13

Fertilizers

Accepted Answer

A)  are often characterized by their N-P-O percentages. 
B)  are not required if crops are removed frequently enough. 
C)  restore needed mineral nutrients to the soil. 
D)  are needed to provide carbon, hydrogen, and oxygen to plants. 
E)  are needed to destroy soil pests. 
A)  are often characterized by their N-P-O percentages. 
B)  are not required if crops are removed frequently enough. 
C)  restore needed mineral nutrients to the soil. 
D)  are needed to provide carbon, hydrogen, and oxygen to plants. 
E)  are needed to destroy soil pests.

Question 14

Explain how scientists determined which plant nutrients are the essential nutrients.

Accepted Answer

Plants were grown in cultures that lacke

Question 15

Carnivorous plants use insects as a source of

Accepted Answer

A)  calcium. 
B)  carbon. 
C)  energy. 
D)  hydrogen. 
E)  nitrogen. 
A)  calcium. 
B)  carbon. 
C)  energy. 
D)  hydrogen. 
E)  nitrogen.

Question 16

The role of leghemoglobin is to maintain _______ levels in the root nodule.

Accepted Answer

A)  high O2 
B)  high CO2 
C)  low O2 
D)  low CO2 
E)  high N2 
A)  high O2 
B)  high CO2 
C)  low O2 
D)  low CO2 
E)  high N2

Question 17

Use the following to answer questions:
Match the mineral nutrient in the list below with each description that follows. Each item may be used once, more than once, or not at all.
-This mineral is necessary for water and ion balance.

Accepted Answer

A) Magnesium 
B) Nitrogen 
C) Phosphorus 
D) Potassium 
E) Iron 
A) Magnesium 
B) Nitrogen 
C) Phosphorus 
D) Potassium 
E) Iron

Question 18

A plant lowers the pH of soil by means of

Accepted Answer

A)  ion exchange. 
B)  leaching. 
C)  Na+ pumping. 
D)  proton pumping. 
E)  All of the above 
A)  ion exchange. 
B)  leaching. 
C)  Na+ pumping. 
D)  proton pumping. 
E)  All of the above

Question 19

The source from which plants derive their carbon is the _______.

Accepted Answer

The answer of The source from which plants derive their...

Question 20

Iron deficiencies cause _______ leaves to become _______.

Accepted Answer

A)  old; yellow 
B)  young; yellow 
C)  old; orange 
D)  young; orange 
E)  old; brown-spotted 
A)  old; yellow 
B)  young; yellow 
C)  old; orange 
D)  young; orange 
E)  old; brown-spotted

Exam 36: Plant Nutrition

Nitrogen and potassium are acquired from

The association of plant roots with fungi

Most plants continuously obtain new sources of mineral nutrients by

The process that is the opposite of nitrogen fixation is called _______.

Clay particles in soils are important for

The form of nitrogen from the soil that most plants prefer is

Most earthworms can be found in

Which of the following is an early step in the formation of both arbuscules and root nodules?

A tomato plants whose young leaves are very yellow, but whose older leaves are still green, most likely has a(n)_______ deficiency.

Most of the nitrogen on Earth is in the form of

One example of a nutrient in reduced form is the

Most clays form from the _______ of rock.

Fertilizers

Explain how scientists determined which plant nutrients are the essential nutrients.

Carnivorous plants use insects as a source of

The role of leghemoglobin is to maintain _______ levels in the root nodule.

Use the following to answer questions: Match the mineral nutrient in the list below with each description that follows. Each item may be used once, more than once, or not at all. -This mineral is necessary for water and ion balance.

A plant lowers the pH of soil by means of

The source from which plants derive their carbon is the _______.

Iron deficiencies cause _______ leaves to become _______.

Studying Life

Small Molecules and the Chemistry of Life

Proteins, Carbohydrates, and Lipids

Nucleic Acids and the Origin of Life

Cells: the Working Units of Life

Cell Membranes

Cell Signaling and Communication

Energy, Enzymes, and Metabolism

Pathways That Harvest Chemical Energy

Photosynthesis: Energy From Sunlight

The Cell Cycle and Cell Division

Inheritance, Genes, and Chromosomes

Dna and Its Role in Heredity

From Dna to Protein: Gene Expression

Gene Mutation and Molecular Medicine

Regulation of Gene Expression

Genomes

Recombinent Dna and Biotechnology

Differential Gene Expression in Development

Development and Evolutionary Change

Evidence and Mechanisms of Evolution

Reconstructing and Using Phylogenies

Species and Their Formation

Evolution of Genes and Genomes

The History of Life on Earth

Bacteria and Archaea: the Prokaryotic Domains

The Origin and Diversification of Eukaryotes

Plants Without Seeds: From Water to Land

The Evolution of Seed Plants

Fungi: Recyclers, Pathogens, Parasites, and Plant Partners

Animal Origins and the Evolution of Body Plans

Protostome Animals

Deuterostome Animals

The Plant Body

Transport in Plants

Regulation of Plant Growth

Reproduction in Flowering Plants

Plant Responses to Environmental Challenges

Physiology, Homeostasis, and Temperature Regulation

Animal Hormones

Immunology: Animal Defense Systems

Animal Reproduction

Animal Development

Neurons and Nervous Systems

Sensory Systems

The Mammalian Nervous System: Structure and Higher Function

Musculoskeletal Systems

Gas Exchange in Animals

Circulatory Systems

Nutrition, Digestion, and Absorption

Salt and Water Balance and Nitrogen

Animal Behavior

Ecology and the Distribution of Life

Population Ecology

Species Interaction and Coevolution

Community Ecology

Ecosystems and Global Ecology

Conservation Biology

Filters

Iron deficiencies cause _ leaves to become _.