Question 1

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 2

The Kuna tribe, which inhabits islands off the coast of Panama, has almost no incidence of heart disease due to ____.

Accepted Answer

A)  ​the unusually large amount of cocoa they consume 
B)  ​the unusually small amount of red wine they consume 
C)  ​the unusually large amount of coffee they consume 
D)  ​the absence of disease-carrying mosquitoes on the islands 
E)  ​an allele that is unique to their tribe 
A)  ​the unusually large amount of cocoa they consume 
B)  ​the unusually small amount of red wine they consume 
C)  ​the unusually large amount of coffee they consume 
D)  ​the absence of disease-carrying mosquitoes on the islands 
E)  ​an allele that is unique to their tribe

Question 3

Which plant compound is most likely responsible for the unusual absence of heart disease among the Kuna?​

Accepted Answer

A)  ​curcumin 
B)  ​strigolactone 
C)  ​resveratrol 
D)  ​caffeine 
E)  ​epicatechin 
A)  ​curcumin 
B)  ​strigolactone 
C)  ​resveratrol 
D)  ​caffeine 
E)  ​epicatechin

Question 4

Gibberellin stimulates ____.

Accepted Answer

A)  ​fruit ripening 
B)  ​leaf abscission 
C)  ​lateral root formation 
D)  ​stem lengthening between the nodes 
E)  ​stem lengthening at the tip 
A)  ​fruit ripening 
B)  ​leaf abscission 
C)  ​lateral root formation 
D)  ​stem lengthening between the nodes 
E)  ​stem lengthening at the tip

Question 5

Irises and other ____ plants flower only when the hours of darkness fall below a critical value, typically in summer.

Accepted Answer

A)  short-day 
B)  ​long-day 
C)  ​annual 
D)  ​biennial 
E)  ​perennial 
A)  short-day 
B)  ​long-day 
C)  ​annual 
D)  ​biennial 
E)  ​perennial

Question 6

The requirement of cold weather before a particular plant process occurs (e.g., germination) is knownas ____.

Accepted Answer

A)  ​the biological clock 
B)  ​vernalization 
C)  ​photoperiodism 
D)  ​biennial life cycle 
E)  ​perennial life cycle 
A)  ​the biological clock 
B)  ​vernalization 
C)  ​photoperiodism 
D)  ​biennial life cycle 
E)  ​perennial life cycle

Question 7

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...

Question 8

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) ​plays a critical role in apical dominance 
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)​low-temperature stimulation of flowering
G)​closes stomata in times of stress
H)​stimulates fruit ripening
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)​stimulates growth of lateral buds
O)​mobilizes food reserves in germinating seeds 
A) ​growth response that orients parts of a plant in a direction influenced by light 
B) ​plays a critical role in apical dominance 
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)​low-temperature stimulation of flowering
G)​closes stomata in times of stress
H)​stimulates fruit ripening
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)​stimulates growth of lateral buds
O)​mobilizes food reserves in germinating seeds

Question 9

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 10

A ____ is an extracellular signaling molecule that exerts its effect at very low concentrations.

Accepted Answer

A)  ​statolith 
B)  ​protein receptor 
C)  ​plant hormone 
D)  ​cytochrome 
E)  ​phytochrome 
A)  ​statolith 
B)  ​protein receptor 
C)  ​plant hormone 
D)  ​cytochrome 
E)  ​phytochrome

Question 11

What technique could a gardener use to invoke the growth of lateral buds on a plant, thereby making the plant bushier?

Accepted Answer

​A gardener could snip off the tip of a

Question 12

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) ​plays a critical role in apical dominance 
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)​low-temperature stimulation of flowering
G)​closes stomata in times of stress
H)​stimulates fruit ripening
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)​stimulates growth of lateral buds
O)​mobilizes food reserves in germinating seeds 
A) ​growth response that orients parts of a plant in a direction influenced by light 
B) ​plays a critical role in apical dominance 
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)​low-temperature stimulation of flowering
G)​closes stomata in times of stress
H)​stimulates fruit ripening
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)​stimulates growth of lateral buds
O)​mobilizes food reserves in germinating seeds

Question 13

When a hormone inhibits its own expression, it is called a ____.

Accepted Answer

A)  ​hormone stimulant 
B)  ​hormone coordinator 
C)  ​hormone suppressant 
D)  ​negative feedback loop 
E)  ​positive feedback loop 
A)  ​hormone stimulant 
B)  ​hormone coordinator 
C)  ​hormone suppressant 
D)  ​negative feedback loop 
E)  ​positive feedback loop

Question 14

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

Accepted Answer

A) ​growth response that orients parts of a plant in a direction influenced by light 
B) ​plays a critical role in apical dominance 
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)​low-temperature stimulation of flowering
G)​closes stomata in times of stress
H)​stimulates fruit ripening
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)​stimulates growth of lateral buds
O)​mobilizes food reserves in germinating seeds 
A) ​growth response that orients parts of a plant in a direction influenced by light 
B) ​plays a critical role in apical dominance 
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)​low-temperature stimulation of flowering
G)​closes stomata in times of stress
H)​stimulates fruit ripening
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)​stimulates growth of lateral buds
O)​mobilizes food reserves in germinating seeds

Question 15

A(n) __________ is an extracellular signaling molecule that exerts its effect at very low concentrations.

Accepted Answer

The answer of A(n) __________ is an extracellular signaling molecule...

Question 16

Temperature extremes, lack of water, and other environmental stresses trigger an increase in ____ synthesis, release, and transport, which helps the plant survive the adverse conditions.

Accepted Answer

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

Question 17

In most cases, the term auxin refers to ____.

Accepted Answer

A)  ​abscisic acid 
B)  ​indole-3-acetic acid 
C)  ​jasmonic acid 
D)  ​nitric oxide 
E)  ​salicylic acid 
A)  ​abscisic acid 
B)  ​indole-3-acetic acid 
C)  ​jasmonic acid 
D)  ​nitric oxide 
E)  ​salicylic acid

Question 18

Explain what occurs when a plant exhibits heliotropism.

Accepted Answer

​Leaves or flowers of some plants change

Question 19

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

Accepted Answer

A) ​growth response that orients parts of a plant in a direction influenced by light 
B) ​plays a critical role in apical dominance 
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)​low-temperature stimulation of flowering
G)​closes stomata in times of stress
H)​stimulates fruit ripening
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)​stimulates growth of lateral buds
O)​mobilizes food reserves in germinating seeds 
A) ​growth response that orients parts of a plant in a direction influenced by light 
B) ​plays a critical role in apical dominance 
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)​low-temperature stimulation of flowering
G)​closes stomata in times of stress
H)​stimulates fruit ripening
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)​stimulates growth of lateral buds
O)​mobilizes food reserves in germinating seeds

Question 20

A houseplant placed in a window grows toward the source of light because auxin ____.

Accepted Answer

A)  ​becomes more concentrated on the illuminated side of the plant 
B)  ​becomes more concentrated in the roots of the plant 
C)  ​becomes more concentrated on the shady side of the plant 
D)  ​inhibits the growth of cells on the shady side, so the cells on the sunny side grow larger 
E)  ​inhibits the growth of cells on the shady side, so the cells on the sunny side grow faster 
A)  ​becomes more concentrated on the illuminated side of the plant 
B)  ​becomes more concentrated in the roots of the plant 
C)  ​becomes more concentrated on the shady side of the plant 
D)  ​inhibits the growth of cells on the shady side, so the cells on the sunny side grow larger 
E)  ​inhibits the growth of cells on the shady side, so the cells on the sunny side grow faster

Exam 30: Communication Strategies in Plants

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

The Kuna tribe, which inhabits islands off the coast of Panama, has almost no incidence of heart disease due to ____.

Which plant compound is most likely responsible for the unusual absence of heart disease among the Kuna?​

Gibberellin stimulates ____.

Irises and other ____ plants flower only when the hours of darkness fall below a critical value, typically in summer.

The requirement of cold weather before a particular plant process occurs (e.g., germination) is knownas ____.

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

The gaseous plant hormone is ____.

A ____ is an extracellular signaling molecule that exerts its effect at very low concentrations.

What technique could a gardener use to invoke the growth of lateral buds on a plant, thereby making the plant bushier?

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

When a hormone inhibits its own expression, it is called a ____.

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

A(n) __________ is an extracellular signaling molecule that exerts its effect at very low concentrations.

Temperature extremes, lack of water, and other environmental stresses trigger an increase in ____ synthesis, release, and transport, which helps the plant survive the adverse conditions.

In most cases, the term auxin refers to ____.

Explain what occurs when a plant exhibits heliotropism.

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

A houseplant placed in a window grows toward the source of light because auxin ____.

Invitation to Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure and Function

Ground Rules of Metabolism

Where It Starts - Photosynthesis

How Cells Release Chemical Energy

Dna Structure and Function

From Dna to Protein

Gene Control

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

Organizating Information About Species

Lifes Origin and Early Evolution

Viruses - Bacteria - and Archaea

Protists - the Simplest Eukaryotes

The Land Plants

Fungi

Animal Evolution - the Invertibrates

Animal Evolution - the Chordates

Human Evolution

Plant Tissues

Plant Nutrition and Transport

Life Cycles of Flowering Plants

Animal Tissues

Neural Control

Sensory Perception

Endocrine Control

Structural Support and Movement

Circulation

Immunity

Respiration

Digestion and Nutrition

Maintaining the Internal Environment

Animal Reproductive Systems

Animal Development

Animal Behavior

Filters

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

Which plant compound is most likely responsible for the unusual absence of heart disease among the Kuna?

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

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

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

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