Question 1

A photoautotroph acquires its carbon from

Accepted Answer

A)  the soil. 
B)  the air. 
C)  water. 
D)  the sun. 
E)  carbon-fixing prokaryotes. 
A)  the soil. 
B)  the air. 
C)  water. 
D)  the sun. 
E)  carbon-fixing prokaryotes.

Question 2

How do nitrogen-fixing microbes first become symbiotic with their plants?

Accepted Answer

A)  They are carried in the seed. 
B)  They are attracted by chemicals released by the root. 
C)  They move in via openings in the plant cell walls. 
D)  They move into the vascular system and multiply. 
E)  They enter root nodules previously produced by the plant. 
A)  They are carried in the seed. 
B)  They are attracted by chemicals released by the root. 
C)  They move in via openings in the plant cell walls. 
D)  They move into the vascular system and multiply. 
E)  They enter root nodules previously produced by the plant.

Question 3

Which three elements are most commonly added to agricultural soils in fertilizers?

Accepted Answer

A)  Nitrogen, phosphorus, iron 
B)  Nitrogen, potassium, iron 
C)  Potassium, sulfur, iron 
D)  Nitrogen, potassium, phosphorus 
E)  Nitrogen, sulfur, iron 
A)  Nitrogen, phosphorus, iron 
B)  Nitrogen, potassium, iron 
C)  Potassium, sulfur, iron 
D)  Nitrogen, potassium, phosphorus 
E)  Nitrogen, sulfur, iron

Question 4

Carnivorous plants are often found in acidic and nutrient-poor environments. The main selective pressure for carnivory is

Accepted Answer

A)  lack of nitrogen and phosphorus sources. 
B)  lack of iron and calcium sources. 
C)  incomplete ion exchange. 
D)  lack of water sources. 
E)  All of the above 
A)  lack of nitrogen and phosphorus sources. 
B)  lack of iron and calcium sources. 
C)  incomplete ion exchange. 
D)  lack of water sources. 
E)  All of the above

Question 5

In almost all plants, roots get oxygen from

Accepted Answer

A)  air spaces in the soil. 
B)  water in soil. 
C)  the leaves, by way of the phloem. 
D)  the leaves, which get oxygen from the air. 
E)  All of the above 
A)  air spaces in the soil. 
B)  water in soil. 
C)  the leaves, by way of the phloem. 
D)  the leaves, which get oxygen from the air. 
E)  All of the above

Question 6

Plants are able to take up and use nitrogen in the form of _______ and _______.

Accepted Answer

A)  ammonia; nitrate 
B)  ammonia; nitrogen gas 
C)  nitrogen gas; nitrate 
D)  nitrogen gas; nitrous oxide 
E)  All of the above 
A)  ammonia; nitrate 
B)  ammonia; nitrogen gas 
C)  nitrogen gas; nitrate 
D)  nitrogen gas; nitrous oxide 
E)  All of the above

Question 7

All nitrogen fixation is carried out by _______, some of which live in symbiosis with other organisms.

Accepted Answer

The answer of All nitrogen fixation is carried out by...

Question 8

_______ are available to the plant in unlimited supply _______.

Accepted Answer

A)  Water and nitrogen; because there is plenty of soil around the plant 
B)  Sulfur and magnesium; because the plant needs relatively small amounts from the soil 
C)  Phosphorus and iron; because they readily dissolve in soil water 
D)  Calcium and chlorine; because they are easily absorbed by the roots 
E)  Hydrogen and oxygen; as long as sufficient water is available 
A)  Water and nitrogen; because there is plenty of soil around the plant 
B)  Sulfur and magnesium; because the plant needs relatively small amounts from the soil 
C)  Phosphorus and iron; because they readily dissolve in soil water 
D)  Calcium and chlorine; because they are easily absorbed by the roots 
E)  Hydrogen and oxygen; as long as sufficient water is available

Question 9

Compared to organic nitrogen sources, commercial nitrogen-containing fertilizer is an imperfect solution to the worldwide problem of soil degradation because

Accepted Answer

A)  its production requires a great deal of energy. 
B)  it pollutes lakes and streams. 
C)  soil applications do not always benefit the plants. 
D)  the cost of shipping offsets the benefits to agricultural production. 
E)  it can never be as good as organic sources. 
A)  its production requires a great deal of energy. 
B)  it pollutes lakes and streams. 
C)  soil applications do not always benefit the plants. 
D)  the cost of shipping offsets the benefits to agricultural production. 
E)  it can never be as good as organic sources.

Question 10

The process of ion exchange is the means by which

Accepted Answer

A)  carbonic acid is added to soils. 
B)  positive ion nutrients are replaced by H+. 
C)  negative ion nutrients are incorporated into soils. 
D)  positive ions are replaced by negative ions. 
E)  neutral atoms become ions in soils. 
A)  carbonic acid is added to soils. 
B)  positive ion nutrients are replaced by H+. 
C)  negative ion nutrients are incorporated into soils. 
D)  positive ions are replaced by negative ions. 
E)  neutral atoms become ions in soils.

Question 11

Root nodules on plants of the legume family contain

Accepted Answer

A)  cyanobacteria. 
B)  Nitrosococcus bacteria. 
C)  Rhizobium bacteria. 
D)  Pseudomonas bacteria. 
E)  Nitrobacter bacteria. 
A)  cyanobacteria. 
B)  Nitrosococcus bacteria. 
C)  Rhizobium bacteria. 
D)  Pseudomonas bacteria. 
E)  Nitrobacter bacteria.

Question 12

All carnivorous plants

Accepted Answer

A)  are parasites. 
B)  depend on animals as a source of carbon. 
C)  are incapable of photosynthesis. 
D)  depend on animals as their sole source of phosphorus. 
E)  obtain supplemental nitrogen from animals. 
A)  are parasites. 
B)  depend on animals as a source of carbon. 
C)  are incapable of photosynthesis. 
D)  depend on animals as their sole source of phosphorus. 
E)  obtain supplemental nitrogen from animals.

Question 13

In nitrogen fixation, the nitrogenase enzyme binds a molecule of N2 and a reducing agent transfers _______ hydrogen atoms before the product is released.

Accepted Answer

A)  two 
B)  three 
C)  four 
D)  five 
E)  six 
A)  two 
B)  three 
C)  four 
D)  five 
E)  six

Question 14

Parasitic plants that contain no chlorophyll are

Accepted Answer

A)  dependent on other organisms for survival. 
B)  autotrophs. 
C)  still plants. 
D)  pests, in some cases. 
E)  a, c, and d 
A)  dependent on other organisms for survival. 
B)  autotrophs. 
C)  still plants. 
D)  pests, in some cases. 
E)  a, c, and d

Question 15

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.
-When bonded to oxygen atoms, this mineral is important in many energy-storing and energy-releasing pathways where ATP is necessary.

Accepted Answer

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

Question 16

In the legume-Rhizobium symbiosis, the _______ partner produces leghemoglobin to provide _______ to the _______ partner.

Accepted Answer

A)  legume; oxygen; Rhizobium 
B)  Rhizobium; oxygen; legume 
C)  legume; nitrogen; Rhizobium 
D)  Rhizobium; nitrogen; legume 
E)  legume; sugars; Rhizobium 
A)  legume; oxygen; Rhizobium 
B)  Rhizobium; oxygen; legume 
C)  legume; nitrogen; Rhizobium 
D)  Rhizobium; nitrogen; legume 
E)  legume; sugars; Rhizobium

Question 17

Compared to micronutrients, macronutrients are

Accepted Answer

A)  larger. 
B)  needed in greater quantities. 
C)  more essential. 
D)  of equal importance. 
E)  less essential. 
A)  larger. 
B)  needed in greater quantities. 
C)  more essential. 
D)  of equal importance. 
E)  less essential.

Question 18

A stunted dark green plant with purple veins is showing signs of _______ deficiency.

Accepted Answer

The answer of A stunted dark green plant with purple...

Question 19

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 micronutrient is necessary for chlorophyll synthesis.

Accepted Answer

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

Question 20

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 a constituent of both proteins and nucleic acids.

Accepted Answer

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

Exam 36: Plant Nutrition

A photoautotroph acquires its carbon from

How do nitrogen-fixing microbes first become symbiotic with their plants?

Which three elements are most commonly added to agricultural soils in fertilizers?

Carnivorous plants are often found in acidic and nutrient-poor environments. The main selective pressure for carnivory is

In almost all plants, roots get oxygen from

Plants are able to take up and use nitrogen in the form of _______ and _______.

All nitrogen fixation is carried out by _______, some of which live in symbiosis with other organisms.

_______ are available to the plant in unlimited supply _______.

Compared to organic nitrogen sources, commercial nitrogen-containing fertilizer is an imperfect solution to the worldwide problem of soil degradation because

The process of ion exchange is the means by which

Root nodules on plants of the legume family contain

All carnivorous plants

In nitrogen fixation, the nitrogenase enzyme binds a molecule of N2 and a reducing agent transfers _______ hydrogen atoms before the product is released.

Parasitic plants that contain no chlorophyll are

In the legume-Rhizobium symbiosis, the _______ partner produces leghemoglobin to provide _______ to the _______ partner.

Compared to micronutrients, macronutrients are

A stunted dark green plant with purple veins is showing signs of _______ deficiency.

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 micronutrient is necessary for chlorophyll synthesis.

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 a constituent of both proteins and nucleic acids.

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

Plants are able to take up and use nitrogen in the form of _ and _.

_ are available to the plant in unlimited supply _.

In nitrogen fixation, the nitrogenase enzyme binds a molecule of N₂ and a reducing agent transfers _______ hydrogen atoms before the product is released.

In the legume-Rhizobium symbiosis, the ___ partner produces leghemoglobin to provide _ to the _____ partner.