Question 1

Day-neutral plants are

Accepted Answer

A) short-day plants. 
B) able to bloom when they are mature enough. 
C) night-blooming plants. 
D) triggered to bloom by cold weather. 
E) none of these. 
A) short-day plants. 
B) able to bloom when they are mature enough. 
C) night-blooming plants. 
D) triggered to bloom by cold weather. 
E) none of these.

Question 2

The effect of directional growth shown in the above figure is known to be caused by

Accepted Answer

A) thigmotropism. 
B) gravitropism. 
C) abscisic acid. 
D) salicylic acid. 
E) all of these. 
A) thigmotropism. 
B) gravitropism. 
C) abscisic acid. 
D) salicylic acid. 
E) all of these.

Question 3

The target cells for hormones

Accepted Answer

A) have special receptor sites. 
B) are not located in roots. 
C) are no different from any other cells. 
D) are located in the interior of the plant. 
E) include all of these descriptions. 
A) have special receptor sites. 
B) are not located in roots. 
C) are no different from any other cells. 
D) are located in the interior of the plant. 
E) include all of these descriptions.

Question 4

Short-day plants

Accepted Answer

A) flower in early spring. 
B) will not bloom until they have been exposed to a dark period longer than a critical length. 
C) flower in the fall. 
D) will not bloom if their dark period is interrupted by a short pulse of intense red light. 
E) do all of these. 
A) flower in early spring. 
B) will not bloom until they have been exposed to a dark period longer than a critical length. 
C) flower in the fall. 
D) will not bloom if their dark period is interrupted by a short pulse of intense red light. 
E) do all of these.

Question 5

Which of the following is NOT one of the plant growth regulators?

Accepted Answer

A) salicylic acid 
B) systemin 
C) brassinosteroids 
D) mineralocorticoids 
E) jasmonates 
A) salicylic acid 
B) systemin 
C) brassinosteroids 
D) mineralocorticoids 
E) jasmonates

Question 6

Gibberellins have their most dramatic effects

Accepted Answer

A) on leaves. 
B) in promoting abscission. 
C) on fruit ripening. 
D) on stem lengthening. 
E) on flowers. 
A) on leaves. 
B) in promoting abscission. 
C) on fruit ripening. 
D) on stem lengthening. 
E) on flowers.

Question 7

Application of synthetic gibberellins to grape plants is commercially beneficial because it results in

Accepted Answer

A) elongation of young grape cells. 
B) longer stem internodes. 
C) more space between individual grapes. 
D) less likelihood of fungal damage to the fruits. 
E) all of these. 
A) elongation of young grape cells. 
B) longer stem internodes. 
C) more space between individual grapes. 
D) less likelihood of fungal damage to the fruits. 
E) all of these.

Question 8

Use the figure above to answer questions 
  
-An adventitious root is indicated by

Accepted Answer

A) A. 
B) B. 
C) C. 
D) B and C. 
E) none of these. 
A) A. 
B) B. 
C) C. 
D) B and C. 
E) none of these.

Question 9

Phytochrome is converted from the inactive to the active form by being exposed to light of what color?

Accepted Answer

A) far red 
B) red 
C) yellow 
D) blue 
E) none of these 
A) far red 
B) red 
C) yellow 
D) blue 
E) none of these

Question 10

The hormone gibberellin reduces the damage caused by fungal infections because of which of the following?

Accepted Answer

A) Increased space between individual grapes increases air circulation and reduces fungi. 
B) It shrinks the internodes to reduce the number of clusters that touch. 
C) It increases the immune response of the plant. 
D) It stimulates a type of signaling molecule that shuts down all fungal growth. 
E) None of these are true. 
A) Increased space between individual grapes increases air circulation and reduces fungi. 
B) It shrinks the internodes to reduce the number of clusters that touch. 
C) It increases the immune response of the plant. 
D) It stimulates a type of signaling molecule that shuts down all fungal growth. 
E) None of these are true.

Question 11

Which of the following statements is false?

Accepted Answer

A) The movement of water into a seed is known as imbibition. 
B) Water is attracted to hydrophilic proteins in the seed. 
C) The shoot system is the first part of a cotyledon to grow. 
D) A germinating seed starts aerobic respiration when the seed coat splits. 
E) Germination is completed once the primary root extends outside the seed. 
A) The movement of water into a seed is known as imbibition. 
B) Water is attracted to hydrophilic proteins in the seed. 
C) The shoot system is the first part of a cotyledon to grow. 
D) A germinating seed starts aerobic respiration when the seed coat splits. 
E) Germination is completed once the primary root extends outside the seed.

Question 12

Which color of light is most effective in producing phototropism?

Accepted Answer

A) red 
B) blue 
C) yellow 
D) white 
E) green 
A) red 
B) blue 
C) yellow 
D) white 
E) green

Question 13

Which of the following is mismatched?

Accepted Answer

A) cytokinin; retards aging 
B) auxin; promotes cell elongation 
C) gibberellin; involved in phototropism and gravitropism 
D) abscisic acid; promotes stomatal closure 
E) ethylene; promotes leaf abscission 
A) cytokinin; retards aging 
B) auxin; promotes cell elongation 
C) gibberellin; involved in phototropism and gravitropism 
D) abscisic acid; promotes stomatal closure 
E) ethylene; promotes leaf abscission

Question 14

The plant hormone that promotes dormancy in some plants and seeds is

Accepted Answer

A) abscisic acid. 
B) auxin. 
C) gibberellin. 
D) ethylene. 
E) none of these. 
A) abscisic acid. 
B) auxin. 
C) gibberellin. 
D) ethylene. 
E) none of these.

Question 15

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 16

Which of the following is mismatched?

Accepted Answer

A) cytokinin; promotes cell division 
B) abscisic acid; triggers bud and seed dormancy 
C) ethylene; breaks dormancy of seeds and buds 
D) auxin; involved in phototropism and gravitropism 
E) nitric oxide; involved in plant defense responses 
A) cytokinin; promotes cell division 
B) abscisic acid; triggers bud and seed dormancy 
C) ethylene; breaks dormancy of seeds and buds 
D) auxin; involved in phototropism and gravitropism 
E) nitric oxide; involved in plant defense responses

Question 17

Monocots, but NOT eudicots, have

Accepted Answer

A) nodes. 
B) cotyledons. 
C) coleoptiles. 
D) hypocotyl hooks. 
E) flowers. 
A) nodes. 
B) cotyledons. 
C) coleoptiles. 
D) hypocotyl hooks. 
E) flowers.

Question 18

Senescence may be counteracted by

Accepted Answer

A) removal of old flowers. 
B) removal of seed pods. 
C) inhibiting nutrient diversion to fruits. 
D) all of these. 
E) none of these. 
A) removal of old flowers. 
B) removal of seed pods. 
C) inhibiting nutrient diversion to fruits. 
D) all of these. 
E) none of these.

Question 19

The polar transport of auxin in a seedling

Accepted Answer

A) occurs in parenchyma cells.   
B) uses passive membrane transporters to move auxin in and out of cells. 
C) uses membrane pumps to move hydrogen ions out of the cytoplasm into the primary cell wall. 
D) activates enzymes that loosen cross-links between cellulose microfibrils. 
E) does all of these. 
A) occurs in parenchyma cells.   
B) uses passive membrane transporters to move auxin in and out of cells. 
C) uses membrane pumps to move hydrogen ions out of the cytoplasm into the primary cell wall. 
D) activates enzymes that loosen cross-links between cellulose microfibrils. 
E) does all of these.

Question 20

Every choice below EXCEPT __________ is a plant hormone.

Accepted Answer

A) IAA 
B) abscisic acid 
C) phytochrome 
D) cytokinin 
E) all are hormones 
A) IAA 
B) abscisic acid 
C) phytochrome 
D) cytokinin 
E) all are hormones

Exam 31: Plant Growth and Development

Day-neutral plants are

The effect of directional growth shown in the above figure is known to be caused by

The target cells for hormones

Short-day plants

Which of the following is NOT one of the plant growth regulators?

Gibberellins have their most dramatic effects

Application of synthetic gibberellins to grape plants is commercially beneficial because it results in

Use the figure above to answer questions -An adventitious root is indicated by

Phytochrome is converted from the inactive to the active form by being exposed to light of what color?

The hormone gibberellin reduces the damage caused by fungal infections because of which of the following?

Which of the following statements is false?

Which color of light is most effective in producing phototropism?

Which of the following is mismatched?

The plant hormone that promotes dormancy in some plants and seeds is

Perhaps a plant's greatest liability is its inability to

Which of the following is mismatched?

Monocots, but NOT eudicots, have

Senescence may be counteracted by

The polar transport of auxin in a seedling

Every choice below EXCEPT __________ is a plant hormone.

Invitation to Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure and Function

A Closer Look at Cell Membranes

Ground Rules of Metabolism

Where It Startsphotosynthesis

Energy-Releasing Pathways

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Dna Structure and Function

From Dna to Protein

Controls Over Genes

Recombinant Dna and Genetic Engineering

The Macroevolutionary Puzzle

Emergence of Evolutionary Thought

Organizing Information About Species

The Origin and Evolution of Life

Viruses and Prokaryotes

Protists the Simplest Eukaryotes

Plants

Fungi

Animals: the Invertebrates

Animal Evolution the Chordates

Human Evolution: a Case Study

Plant Tissues

Plant Nutrition and Transport

Plant Reproduction

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Protection, Support, and Movement

Circulation

Immunity

Respiration

Digestion and Human Nutrition

Maintaining the Internal Environment

Animal Reproductive Systems

Animal Development

Animal Behavior

Population Ecology

Community Structure and Biodiversity

Ecosystems

The Biosphere

Human Impacts on the Biosphere

Filters