Question 1

The subsoil is known as the _______ horizon.

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
E)  E 
A)  A 
B)  B 
C)  C 
D)  D 
E)  E

Question 2

An advantage to using inorganic fertilizers (as opposed to organic fertilizers) is that

Accepted Answer

A)  they improve the physical properties of the soil. 
B)  they can be taken up by roots rapidly after application. 
C)  their quality is better than that of organic fertilizers. 
D)  they contain minerals in their proper ionic form. 
E)  they contain larger particles. 
A)  they improve the physical properties of the soil. 
B)  they can be taken up by roots rapidly after application. 
C)  their quality is better than that of organic fertilizers. 
D)  they contain minerals in their proper ionic form. 
E)  they contain larger particles.

Question 3

Plants often use the essential element _______ as a chemical messenger.

Accepted Answer

The answer of Plants often use the essential element _______...

Question 4

Which is not a reason that plants have root hairs?

Accepted Answer

A)  To increase root surface area 
B)  To increase absorption 
C)  To explore small soil spaces 
D)  To make contact with insects 
E)  To make contact with soil microbes 
A)  To increase root surface area 
B)  To increase absorption 
C)  To explore small soil spaces 
D)  To make contact with insects 
E)  To make contact with soil microbes

Question 5

Which statement about parasitic plants is true?

Accepted Answer

A)  They are not considered true plants. 
B)  Parasitic plants that photosynthesize are called holoparasites. 
C)  Hemiparasites are usually pale in color. 
D)  They are not pollenated. 
E)  Some parasitic plants use haustoria to tap into their host. 
A)  They are not considered true plants. 
B)  Parasitic plants that photosynthesize are called holoparasites. 
C)  Hemiparasites are usually pale in color. 
D)  They are not pollenated. 
E)  Some parasitic plants use haustoria to tap into their host.

Question 6

Yellowing of the older leaves of a plant is a result of _______ deficiency.

Accepted Answer

A)  potassium 
B)  manganese 
C)  iron 
D)  sulfur 
E)  nitrogen 
A)  potassium 
B)  manganese 
C)  iron 
D)  sulfur 
E)  nitrogen

Question 7

Refer to the figure showing root nodule formation.   Which letter in the figure indicates an area where root cells release flavonoids?

Accepted Answer

The answer of Refer to the figure showing root nodule...

Question 8

Refer to the table.Researchers grew seedlings with phosphate fertilizer, arbuscular mycorrhizae, or both, and then weighed the seedlings after six months.   Which conclusion could be drawn from these data?

Accepted Answer

A)  Phosphate fertilizer has no added effect on plants that have mycorrhizae. 
B)  More phosphate fertilizer will always result in more plant growth. 
C)  Mycorrhizae alone maximize plant growth. 
D)  Mycorrhizae make it easier for plants to take up any added nutrients. 
E)  Farmers should not bother considering mycorrhizal relationships with crops, since inorganic fertilizers are sufficient. 
A)  Phosphate fertilizer has no added effect on plants that have mycorrhizae. 
B)  More phosphate fertilizer will always result in more plant growth. 
C)  Mycorrhizae alone maximize plant growth. 
D)  Mycorrhizae make it easier for plants to take up any added nutrients. 
E)  Farmers should not bother considering mycorrhizal relationships with crops, since inorganic fertilizers are sufficient.

Question 9

If you dig through the A and B soil horizons in your garden, you will know that you have reached the C horizon when your shovel is no longer full of

Accepted Answer

A)  plant roots. 
B)  earthworms. 
C)  parent rock. 
D)  roots and earthworms. 
E)  roots and parent rock. 
A)  plant roots. 
B)  earthworms. 
C)  parent rock. 
D)  roots and earthworms. 
E)  roots and parent rock.

Question 10

In terms of nutrients, macronutrients are _______ abundant than micronutrients in the dry matter of a plant.

Accepted Answer

The answer of In terms of nutrients, macronutrients are _______...

Question 11

To encourage crop growth, farmers often choose to add _______ fertilizers, due to their immediate availability.

Accepted Answer

The answer of To encourage crop growth, farmers often choose...

Question 12

A farmer is seen tilling a hard-packed plot of soil.You conclude that the farmer is trying to increase the _______ in the soil.

Accepted Answer

The answer of A farmer is seen tilling a hard-packed...

Question 13

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 14

Through nodule formation, a legume crop can help subsequent crops in a(n) _______ system by leaving extra nitrogen behind in the soil after it has been harvested.

Accepted Answer

A)  fertilization 
B)  inorganic 
C)  cropping 
D)  rotational 
E)  counter-rotational 
A)  fertilization 
B)  inorganic 
C)  cropping 
D)  rotational 
E)  counter-rotational

Question 15

Could a holoparasitic plant species evolve into a hemiparasitic plant species? Why or why not? What about a hemiparasitic plant evolving into a holoparasitic plant?

Accepted Answer

Because holoparasitic plant species have

Question 16

Nitrogen-fixing rhizobia can associate with the roots of which common garden plant?

Accepted Answer

A)  Tomato 
B)  Lettuce 
C)  Celery 
D)  Pepper 
E)  Bean 
A)  Tomato 
B)  Lettuce 
C)  Celery 
D)  Pepper 
E)  Bean

Question 17

Since clay particles are relatively small, what would you expect to be deficient in a soil that is mostly clay?

Accepted Answer

A)  Water 
B)  Air 
C)  Organic matter 
D)  Minerals 
E)  Soil organisms 
A)  Water 
B)  Air 
C)  Organic matter 
D)  Minerals 
E)  Soil organisms

Question 18

Some parasitic plants are attracted to their hosts by the same chemicals that the host uses to attract

Accepted Answer

A)  root nodules. 
B)  mycorrhizae. 
C)  root hairs. 
D)  hairy roots. 
E)  crown galls. 
A)  root nodules. 
B)  mycorrhizae. 
C)  root hairs. 
D)  hairy roots. 
E)  crown galls.

Question 19

Which statement about soils and soil formation is false?

Accepted Answer

A)  Air spaces in the soil are rich in oxygen. 
B)  Extreme temperatures play a part in the soil-forming process. 
C)  Dead organic matter is most prevalent in the B soil horizon. 
D)  Soils with an excess of clay can be deficient in oxygen. 
E)  Soil consists of living as well as nonliving components. 
A)  Air spaces in the soil are rich in oxygen. 
B)  Extreme temperatures play a part in the soil-forming process. 
C)  Dead organic matter is most prevalent in the B soil horizon. 
D)  Soils with an excess of clay can be deficient in oxygen. 
E)  Soil consists of living as well as nonliving components.

Question 20

What kinds of environmental problems can result from the use of inorganic fertilizers?

Accepted Answer

Inorganic fertilizers tend to leach from

Exam 35: Plant Nutrition

The subsoil is known as the _______ horizon.

An advantage to using inorganic fertilizers (as opposed to organic fertilizers) is that

Plants often use the essential element _______ as a chemical messenger.

Which is not a reason that plants have root hairs?

Which statement about parasitic plants is true?

Yellowing of the older leaves of a plant is a result of _______ deficiency.

Refer to the figure showing root nodule formation. Which letter in the figure indicates an area where root cells release flavonoids?

Refer to the table.Researchers grew seedlings with phosphate fertilizer, arbuscular mycorrhizae, or both, and then weighed the seedlings after six months. Which conclusion could be drawn from these data?

If you dig through the A and B soil horizons in your garden, you will know that you have reached the C horizon when your shovel is no longer full of

In terms of nutrients, macronutrients are _______ abundant than micronutrients in the dry matter of a plant.

To encourage crop growth, farmers often choose to add _______ fertilizers, due to their immediate availability.

A farmer is seen tilling a hard-packed plot of soil.You conclude that the farmer is trying to increase the _______ in the soil.

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

Through nodule formation, a legume crop can help subsequent crops in a(n) _______ system by leaving extra nitrogen behind in the soil after it has been harvested.

Could a holoparasitic plant species evolve into a hemiparasitic plant species? Why or why not? What about a hemiparasitic plant evolving into a holoparasitic plant?

Nitrogen-fixing rhizobia can associate with the roots of which common garden plant?

Since clay particles are relatively small, what would you expect to be deficient in a soil that is mostly clay?

Some parasitic plants are attracted to their hosts by the same chemicals that the host uses to attract

Which statement about soils and soil formation is false?

What kinds of environmental problems can result from the use of inorganic fertilizers?

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 Communication and Multicellularity

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

Recombinant Dna and Biotechnology

Mechanisms of Evolution

Reconstructing and Using Phylogenies

Speciation

Evolution of Genes and Genomes

The History of Life on Earth

Bacteria, Archaea, and Viruses

The Origin and Diversification of Eukaryotes

Plants Without Seeds: From Water to Land

The Evolution of Seed Plants

The Evolution and Diversity of Fungi

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, Glia, and Nervous Systems

Sensory Systems

The Mammalian Nervous System: Structure and Higher Functions

Musculoskeletal Systems

Gas Exchange

Circulatory Systems

Nutrition, Digestion, and Absorption

Salt and Water Balance and Nitrogen Excretion

Animal Behavior

The Physical Environment and Biogeography of Life

Populations

Species Interactions

Communities

Ecosystems

A Changing Biosphere

Filters

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