Question 1

The process by which a plant sheds leaves or other parts is known as _____.

Accepted Answer

A)  abscission 
B)  ripening 
C)  maturation 
D)  transpiration 
E)  vaporization 
A)  abscission 
B)  ripening 
C)  maturation 
D)  transpiration 
E)  vaporization A

Question 2

Figure 30.11
  
-The plant movement in the accompanying figure is caused by ____.

Accepted Answer

A)  auxin differences in two sides of the stems 
B)  gibberellin released in one side of the leaf 
C)  abscisic acid in two sides of the stems 
D)  salicylic acid in two sides of the roots 
E)  cytokinin differences in two sides of the stem 
A)  auxin differences in two sides of the stems 
B)  gibberellin released in one side of the leaf 
C)  abscisic acid in two sides of the stems 
D)  salicylic acid in two sides of the roots 
E)  cytokinin differences in two sides of the stem A

Question 3

__________ refers to an organism's response to changes in the length of day relative to night.

Accepted Answer

Photoperiodism

Question 4

Respond to the following statements in reference to the five plant hormones listed below.
-This hormone is a gas that promotes ripening.

Accepted Answer

A) auxins 
B) gibberellins 
C) cytokinins 
D) abscisic acid 
E) Ethylene 
A) auxins 
B) gibberellins 
C) cytokinins 
D) abscisic acid 
E) Ethylene

Question 5

______ and nitric oxide coordinate a plant's response to pathogens by closing stomata,thus preventing further entry.

Accepted Answer

The answer of ______ and nitric oxide coordinate a plant's...

Question 6

Plants make ____,which are similar to female sex hormones in mammals but have nothing to do with sexual reproduction in plants.

Accepted Answer

A)  oxytocin 
B)  phytoestrogens 
C)  auxins 
D)  cytokinins 
E)  gibberellins 
A)  oxytocin 
B)  phytoestrogens 
C)  auxins 
D)  cytokinins 
E)  gibberellins

Question 7

A plant secretes ____ when it needs to respond defensively to a pathogen.

Accepted Answer

A)  salicylic acid 
B)  systemin 
C)  brassinosteroids 
D)  mineralocorticoids 
E)  nitric oxide 
A)  salicylic acid 
B)  systemin 
C)  brassinosteroids 
D)  mineralocorticoids 
E)  nitric oxide

Question 8

The gaseous plant hormone is ____.

Accepted Answer

A)  auxin 
B)  gibberellin 
C)  cytokinin 
D)  abscisic acid 
E)  ethylene 
A)  auxin 
B)  gibberellin 
C)  cytokinin 
D)  abscisic acid 
E)  ethylene

Question 9

A hormonal signal is detected by ____.

Accepted Answer

A)  chloroplasts 
B)  transport proteins 
C)  receptor proteins 
D)  statoliths 
E)  plasma membranes 
A)  chloroplasts 
B)  transport proteins 
C)  receptor proteins 
D)  statoliths 
E)  plasma membranes

Question 10

Choose the one most appropriate answer for each. Each letter will be used once.
-salicylic acid

Accepted Answer

A) growth response that orients parts of a plant in a direction influenced by light 
B) burst of hydrogen peroxide and nitric oxide that causes infected cells to commit suicide 
C) an organism's response to changes in length of day relative to night 
D) organelle involved in sensing gravity 
E) light-sensitive pigment that helps set plant circadian rhythm based on length of night
F)flowering after a long season of cold temperatures
G)closes stomata in times of stress
H)initiates fruit ripening in nearby fruits
I)flowers only when hours of darkness fall below a critical value
J)flavonoid in cocoa responsible for the unusual absence of heart disease in the Kuna
K)occurring on a 24-hour cycle
L)flowers only when hours of darkness are greater than some critical value
M)activates systemic acquired resistance
N)inhibits the growth of lateral roots
O)mobilizes food reserves in germinating seeds 
A) growth response that orients parts of a plant in a direction influenced by light 
B) burst of hydrogen peroxide and nitric oxide that causes infected cells to commit suicide 
C) an organism's response to changes in length of day relative to night 
D) organelle involved in sensing gravity 
E) light-sensitive pigment that helps set plant circadian rhythm based on length of night
F)flowering after a long season of cold temperatures
G)closes stomata in times of stress
H)initiates fruit ripening in nearby fruits
I)flowers only when hours of darkness fall below a critical value
J)flavonoid in cocoa responsible for the unusual absence of heart disease in the Kuna
K)occurring on a 24-hour cycle
L)flowers only when hours of darkness are greater than some critical value
M)activates systemic acquired resistance
N)inhibits the growth of lateral roots
O)mobilizes food reserves in germinating seeds

Question 11

Choose the one most appropriate answer for each. Each letter will be used once.
-auxin

Accepted Answer

A) growth response that orients parts of a plant in a direction influenced by light 
B) burst of hydrogen peroxide and nitric oxide that causes infected cells to commit suicide 
C) an organism's response to changes in length of day relative to night 
D) organelle involved in sensing gravity 
E) light-sensitive pigment that helps set plant circadian rhythm based on length of night
F)flowering after a long season of cold temperatures
G)closes stomata in times of stress
H)initiates fruit ripening in nearby fruits
I)flowers only when hours of darkness fall below a critical value
J)flavonoid in cocoa responsible for the unusual absence of heart disease in the Kuna
K)occurring on a 24-hour cycle
L)flowers only when hours of darkness are greater than some critical value
M)activates systemic acquired resistance
N)inhibits the growth of lateral roots
O)mobilizes food reserves in germinating seeds 
A) growth response that orients parts of a plant in a direction influenced by light 
B) burst of hydrogen peroxide and nitric oxide that causes infected cells to commit suicide 
C) an organism's response to changes in length of day relative to night 
D) organelle involved in sensing gravity 
E) light-sensitive pigment that helps set plant circadian rhythm based on length of night
F)flowering after a long season of cold temperatures
G)closes stomata in times of stress
H)initiates fruit ripening in nearby fruits
I)flowers only when hours of darkness fall below a critical value
J)flavonoid in cocoa responsible for the unusual absence of heart disease in the Kuna
K)occurring on a 24-hour cycle
L)flowers only when hours of darkness are greater than some critical value
M)activates systemic acquired resistance
N)inhibits the growth of lateral roots
O)mobilizes food reserves in germinating seeds

Question 12

Even though the autumn may be unusually warm,the leaves from deciduous trees begin to drop during September.Which of the following is the best explanation?

Accepted Answer

A)  The trees are responding to shorter days. 
B)  The autumn months are usually wetter because the summer rains were delayed. 
C)  The effects of phototropism are operating "right on schedule." 
D)  There is not enough sunlight to carry on photosynthesis any longer. 
E)  The trees are responding to consistent temperatures. 
A)  The trees are responding to shorter days. 
B)  The autumn months are usually wetter because the summer rains were delayed. 
C)  The effects of phototropism are operating "right on schedule." 
D)  There is not enough sunlight to carry on photosynthesis any longer. 
E)  The trees are responding to consistent temperatures.

Question 13

Choose the one most appropriate answer for each. Each letter will be used once.
-long-day plant

Accepted Answer

A) growth response that orients parts of a plant in a direction influenced by light 
B) burst of hydrogen peroxide and nitric oxide that causes infected cells to commit suicide 
C) an organism's response to changes in length of day relative to night 
D) organelle involved in sensing gravity 
E) light-sensitive pigment that helps set plant circadian rhythm based on length of night
F)flowering after a long season of cold temperatures
G)closes stomata in times of stress
H)initiates fruit ripening in nearby fruits
I)flowers only when hours of darkness fall below a critical value
J)flavonoid in cocoa responsible for the unusual absence of heart disease in the Kuna
K)occurring on a 24-hour cycle
L)flowers only when hours of darkness are greater than some critical value
M)activates systemic acquired resistance
N)inhibits the growth of lateral roots
O)mobilizes food reserves in germinating seeds 
A) growth response that orients parts of a plant in a direction influenced by light 
B) burst of hydrogen peroxide and nitric oxide that causes infected cells to commit suicide 
C) an organism's response to changes in length of day relative to night 
D) organelle involved in sensing gravity 
E) light-sensitive pigment that helps set plant circadian rhythm based on length of night
F)flowering after a long season of cold temperatures
G)closes stomata in times of stress
H)initiates fruit ripening in nearby fruits
I)flowers only when hours of darkness fall below a critical value
J)flavonoid in cocoa responsible for the unusual absence of heart disease in the Kuna
K)occurring on a 24-hour cycle
L)flowers only when hours of darkness are greater than some critical value
M)activates systemic acquired resistance
N)inhibits the growth of lateral roots
O)mobilizes food reserves in germinating seeds

Question 14

In some plants,the direction of growth changes in response to contact with an object.This is called __________.

Accepted Answer

The answer of In some plants,the direction of growth changes...

Question 15

Choose the one most appropriate answer for each. Each letter will be used once.
-vernalization

Accepted Answer

A) growth response that orients parts of a plant in a direction influenced by light 
B) burst of hydrogen peroxide and nitric oxide that causes infected cells to commit suicide 
C) an organism's response to changes in length of day relative to night 
D) organelle involved in sensing gravity 
E) light-sensitive pigment that helps set plant circadian rhythm based on length of night
F)flowering after a long season of cold temperatures
G)closes stomata in times of stress
H)initiates fruit ripening in nearby fruits
I)flowers only when hours of darkness fall below a critical value
J)flavonoid in cocoa responsible for the unusual absence of heart disease in the Kuna
K)occurring on a 24-hour cycle
L)flowers only when hours of darkness are greater than some critical value
M)activates systemic acquired resistance
N)inhibits the growth of lateral roots
O)mobilizes food reserves in germinating seeds 
A) growth response that orients parts of a plant in a direction influenced by light 
B) burst of hydrogen peroxide and nitric oxide that causes infected cells to commit suicide 
C) an organism's response to changes in length of day relative to night 
D) organelle involved in sensing gravity 
E) light-sensitive pigment that helps set plant circadian rhythm based on length of night
F)flowering after a long season of cold temperatures
G)closes stomata in times of stress
H)initiates fruit ripening in nearby fruits
I)flowers only when hours of darkness fall below a critical value
J)flavonoid in cocoa responsible for the unusual absence of heart disease in the Kuna
K)occurring on a 24-hour cycle
L)flowers only when hours of darkness are greater than some critical value
M)activates systemic acquired resistance
N)inhibits the growth of lateral roots
O)mobilizes food reserves in germinating seeds

Question 16

IAA is the most frequently occurring ___________ in plants and plays a critical role in all aspects of plant development.

Accepted Answer

A)  cytokinin 
B)  hormone 
C)  auxin 
D)  gibberellin 
E)  ethylene 
A)  cytokinin 
B)  hormone 
C)  auxin 
D)  gibberellin 
E)  ethylene

Question 17

Perhaps a plant's greatest liability is its inability to ____.

Accepted Answer

A)  produce growth hormones 
B)  use aerobic respiration 
C)  move when conditions around it deteriorate 
D)  produce its own lipids and proteins 
E)  respond to dwindling supplies of nutrients and water 
A)  produce growth hormones 
B)  use aerobic respiration 
C)  move when conditions around it deteriorate 
D)  produce its own lipids and proteins 
E)  respond to dwindling supplies of nutrients and water

Question 18

During primary growth,auxin causes transport proteins to pump hydrogen ions from cytoplasm into the cell wall,which increases ________ and softens the cell wall.

Accepted Answer

The answer of During primary growth,auxin causes transport proteins to...

Question 19

Choose the one most appropriate answer for each. Each letter will be used once.
-phytochrome

Accepted Answer

A) growth response that orients parts of a plant in a direction influenced by light 
B) burst of hydrogen peroxide and nitric oxide that causes infected cells to commit suicide 
C) an organism's response to changes in length of day relative to night 
D) organelle involved in sensing gravity 
E) light-sensitive pigment that helps set plant circadian rhythm based on length of night
F)flowering after a long season of cold temperatures
G)closes stomata in times of stress
H)initiates fruit ripening in nearby fruits
I)flowers only when hours of darkness fall below a critical value
J)flavonoid in cocoa responsible for the unusual absence of heart disease in the Kuna
K)occurring on a 24-hour cycle
L)flowers only when hours of darkness are greater than some critical value
M)activates systemic acquired resistance
N)inhibits the growth of lateral roots
O)mobilizes food reserves in germinating seeds 
A) growth response that orients parts of a plant in a direction influenced by light 
B) burst of hydrogen peroxide and nitric oxide that causes infected cells to commit suicide 
C) an organism's response to changes in length of day relative to night 
D) organelle involved in sensing gravity 
E) light-sensitive pigment that helps set plant circadian rhythm based on length of night
F)flowering after a long season of cold temperatures
G)closes stomata in times of stress
H)initiates fruit ripening in nearby fruits
I)flowers only when hours of darkness fall below a critical value
J)flavonoid in cocoa responsible for the unusual absence of heart disease in the Kuna
K)occurring on a 24-hour cycle
L)flowers only when hours of darkness are greater than some critical value
M)activates systemic acquired resistance
N)inhibits the growth of lateral roots
O)mobilizes food reserves in germinating seeds

Question 20

Auxin is made mainly in ____ and in young leaves,and transported elsewhere.

Accepted Answer

A)  chloroplasts 
B)  lateral buds 
C)  lateral meristems 
D)  root apical meristems 
E)  shoot apical meristems 
A)  chloroplasts 
B)  lateral buds 
C)  lateral meristems 
D)  root apical meristems 
E)  shoot apical meristems

Exam 30: Communication Strategies in Plants

The process by which a plant sheds leaves or other parts is known as _____.

Figure 30.11 -The plant movement in the accompanying figure is caused by ____.

__________ refers to an organism's response to changes in the length of day relative to night.

Respond to the following statements in reference to the five plant hormones listed below. -This hormone is a gas that promotes ripening.

______ and nitric oxide coordinate a plant's response to pathogens by closing stomata,thus preventing further entry.

Plants make ____,which are similar to female sex hormones in mammals but have nothing to do with sexual reproduction in plants.

A plant secretes ____ when it needs to respond defensively to a pathogen.

The gaseous plant hormone is ____.

A hormonal signal is detected by ____.

Choose the one most appropriate answer for each. Each letter will be used once. -salicylic acid

Choose the one most appropriate answer for each. Each letter will be used once. -auxin

Even though the autumn may be unusually warm,the leaves from deciduous trees begin to drop during September.Which of the following is the best explanation?

Choose the one most appropriate answer for each. Each letter will be used once. -long-day plant

In some plants,the direction of growth changes in response to contact with an object.This is called __________.

Choose the one most appropriate answer for each. Each letter will be used once. -vernalization

IAA is the most frequently occurring ___________ in plants and plays a critical role in all aspects of plant development.

Perhaps a plant's greatest liability is its inability to ____.

During primary growth,auxin causes transport proteins to pump hydrogen ions from cytoplasm into the cell wall,which increases ________ and softens the cell wall.

Choose the one most appropriate answer for each. Each letter will be used once. -phytochrome

Auxin is made mainly in ____ and in young leaves,and transported elsewhere.

Invitation to Biology

Life's Chemical Bases

Molecules of Life

Cell Structure

Ground Rules of Metabolism

Where it Starts—Photosynthesis

How Cells Release Chemical Energy

DNA Structure and Function

From DNA to Protein

Control of Gene Expression

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Studying and Manipulating Genomes

Evidence of Evolution

Processes of Evolution

Organizing Information about Species

Life's Origin and Early Evolution

Viruses, Bacteria, and Archaea

Protists: The Simplest Eukaryotes

The Land Plants

Fungi

Animal Evolution: The Invertebrates

Animal Evolution: The Chordates

Human Evolution

Plant Tissues

Plant Nutrition and Transport

Life Cycles of Flowering Plants

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Structural Support and Movement

Circulation

Immunity

Respiration

Digestion and Nutrition

Maintaining the Internal Environment

Animal Reproductive System

Animal Development

Animal Behavior

Population Ecology

Community Ecology

Ecosystems

The Biosphere

Human Impacts on the Biosphere

Filters