Question 1

Genes, acting in conjunction with the environment, control patterns of ________.

Accepted Answer

A)  growth 
B)  development 
C)  differentiation 
D)  response to environmental changes 
E)  All of the answer choices are correct. 
A)  growth 
B)  development 
C)  differentiation 
D)  response to environmental changes 
E)  All of the answer choices are correct.

Question 2

Which of the following groups of plants tends to be the least sensitive to auxins?

Accepted Answer

A)  herbaceous dicots 
B)  monocots 
C)  woody dicots 
D)  flowering plants with net-veined leaves 
E)  plants with flower parts in multiples of 4 or 5 
A)  herbaceous dicots 
B)  monocots 
C)  woody dicots 
D)  flowering plants with net-veined leaves 
E)  plants with flower parts in multiples of 4 or 5

Question 3

Plant movements that are not oriented relative to the direction of the stimulus are called

Accepted Answer

A)  phototropisms. 
B)  nastic movements. 
C)  etiolated movements. 
D)  thigmotropisms. 
E)  silhouette movements. 
A)  phototropisms. 
B)  nastic movements. 
C)  etiolated movements. 
D)  thigmotropisms. 
E)  silhouette movements.

Question 4

Which of the following statements is correct?

Accepted Answer

A)  Turgor movements were the basis for Linnaeus' garden clock. 
B)  Nastic movements are a type of turgor movement in flat organs. 
C)  in plants or plant parts that show turgor movements, the entire plant moves. 
D)  in a pulvinus, water slowly moves out of the xylem into the surrounding area, causing movement. 
E)  a phototropism is a form of turgor movement. 
A)  Turgor movements were the basis for Linnaeus' garden clock. 
B)  Nastic movements are a type of turgor movement in flat organs. 
C)  in plants or plant parts that show turgor movements, the entire plant moves. 
D)  in a pulvinus, water slowly moves out of the xylem into the surrounding area, causing movement. 
E)  a phototropism is a form of turgor movement.

Question 5

Which plant hormone was isolated from a fungus causing "foolish-seedling disease"?

Accepted Answer

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

Question 6

An important commercial use of auxin is to

Accepted Answer

A)  defoliate forests. 
B)  induce fruit ripening. 
C)  cause fruit to drop so ground harvesting can take place. 
D)  stimulate production of adventitious roots on stem and leaf cuttings. 
E)  stimulate flowering. 
A)  defoliate forests. 
B)  induce fruit ripening. 
C)  cause fruit to drop so ground harvesting can take place. 
D)  stimulate production of adventitious roots on stem and leaf cuttings. 
E)  stimulate flowering.

Question 7

The Japanese scientist who reported the discovery of bakane ("foolish seedling") effect on rice was

Accepted Answer

A)  Nakasone. 
B)  Hirohito. 
C)  Fuji. 
D)  Kurosawa. 
E)  Kaneshiro. 
A)  Nakasone. 
B)  Hirohito. 
C)  Fuji. 
D)  Kurosawa. 
E)  Kaneshiro.

Question 8

A plant that is spindly because it has been grown in the dark is said to be etiolated.

Accepted Answer

A) True 
 B)False

Question 9

Dormancy caused by a thick, impervious seed coat may be overcome by filing or nicking the seed coat.

Accepted Answer

A) True 
 B)False

Question 10

Hormones differ from vitamins in all of the following ways EXCEPT

Accepted Answer

A)  Hormones control development; vitamins are needed for functioning of some enzymes. 
B)  Hormones are required in far smaller amounts than vitamins. 
C)  Hormones are inorganic molecules whereas vitamins are small organic molecules. 
D)  Hormones move from site of production to site of action; vitamins are produced in cells where they are utilized. 
E)  Plant hormones have no function in animals; vitamins are needed by animals and many are obtained from plants. 
A)  Hormones control development; vitamins are needed for functioning of some enzymes. 
B)  Hormones are required in far smaller amounts than vitamins. 
C)  Hormones are inorganic molecules whereas vitamins are small organic molecules. 
D)  Hormones move from site of production to site of action; vitamins are produced in cells where they are utilized. 
E)  Plant hormones have no function in animals; vitamins are needed by animals and many are obtained from plants.

Question 11

The suppression of the growth of axillary or lateral buds is called

Accepted Answer

A)  metabolic inhibition. 
B)  dioxin toxic syndrome. 
C)  recessive meristem induction. 
D)  cytokinin-gibberellin negation. 
E)  apical dominance. 
A)  metabolic inhibition. 
B)  dioxin toxic syndrome. 
C)  recessive meristem induction. 
D)  cytokinin-gibberellin negation. 
E)  apical dominance.

Question 12

No developmental process (germination or root and shoot initiation, for example) is influenced by more than one plant hormone.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following is an effect of light on auxin?

Accepted Answer

A)  It develops into a more complex substance. 
B)  It disintegrates completely. 
C)  It migrates away from the light against a diffusion gradient. 
D)  It is increased in quantity. 
E)  It produces a stronger response. 
A)  It develops into a more complex substance. 
B)  It disintegrates completely. 
C)  It migrates away from the light against a diffusion gradient. 
D)  It is increased in quantity. 
E)  It produces a stronger response.

Question 14

Day-neutral plants do not need light in order to flower.

Accepted Answer

A) True 
 B)False

Question 15

Circadian rhythms are found in both plants and animals.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following is a simple device that rotates a potted plant slowly about a horizontal axis?

Accepted Answer

A)  graviscope 
B)  parallelostat 
C)  phytomotor 
D)  clinostat 
E)  None of these answers are correct. 
A)  graviscope 
B)  parallelostat 
C)  phytomotor 
D)  clinostat 
E)  None of these answers are correct.

Question 17

Quiescence and dormancy with respect to seeds means exactly the same thing: that is, the embryo of a seed does not grow even if the conditions for growth are favorable.

Accepted Answer

A) True 
 B)False

Question 18

The defoliant Agent Orange was a 1-to-1 mixture of 2,4-D and

Accepted Answer

A)  TCDD. 
B)  2,4,5-T. 
C)  DDT. 
D)  TCP. 
E)  2,4,6-Z. 
A)  TCDD. 
B)  2,4,5-T. 
C)  DDT. 
D)  TCP. 
E)  2,4,6-Z.

Question 19

External environmental factors influencing plant growth and development include ________.

Accepted Answer

A)  water quality 
B)  water availability 
C)  minerals 
D)  light 
E)  All of the answer choices are correct. 
A)  water quality 
B)  water availability 
C)  minerals 
D)  light 
E)  All of the answer choices are correct.

Question 20

Which of the following plant growth processes appear to be affected by gibberellin?

Accepted Answer

A)  increasing stem growth 
B)  reversing genetic dwarfism 
C)  breaking seed dormancy 
D)  stimulate growth at lower temperatures 
E)  All of the answer choices are correct. 
A)  increasing stem growth 
B)  reversing genetic dwarfism 
C)  breaking seed dormancy 
D)  stimulate growth at lower temperatures 
E)  All of the answer choices are correct.

Exam 11: Growth

Genes, acting in conjunction with the environment, control patterns of ________.

Which of the following groups of plants tends to be the least sensitive to auxins?

Plant movements that are not oriented relative to the direction of the stimulus are called

Which of the following statements is correct?

Which plant hormone was isolated from a fungus causing "foolish-seedling disease"?

An important commercial use of auxin is to

The Japanese scientist who reported the discovery of bakane ("foolish seedling") effect on rice was

A plant that is spindly because it has been grown in the dark is said to be etiolated.

Dormancy caused by a thick, impervious seed coat may be overcome by filing or nicking the seed coat.

Hormones differ from vitamins in all of the following ways EXCEPT

The suppression of the growth of axillary or lateral buds is called

No developmental process (germination or root and shoot initiation, for example) is influenced by more than one plant hormone.

Which of the following is an effect of light on auxin?

Day-neutral plants do not need light in order to flower.

Circadian rhythms are found in both plants and animals.

Which of the following is a simple device that rotates a potted plant slowly about a horizontal axis?

Quiescence and dormancy with respect to seeds means exactly the same thing: that is, the embryo of a seed does not grow even if the conditions for growth are favorable.

The defoliant Agent Orange was a 1-to-1 mixture of 2,4-D and

External environmental factors influencing plant growth and development include ________.

Which of the following plant growth processes appear to be affected by gibberellin?

What Is Plant Biology

The Nature of Life

Cells

Tissues

Roots and Soils

Stems

Leaves

Flowers, Fruits, and Seeds

Water in Plants

Plant Metabolism

Meiosis and Alternation of Generation

Genetics

Plant Breeding and Propagation

Evolution

Plant Names and Classification

Domain Kingdom Bacteria, Domain Kingdom Archaea, and Viruses

Kingdom Protista

Kingdom Fungi

Introduction to the Plant Kingdom: Bryophytes

The Seedless Vascular Plants - Ferns and Their Relatives

Introduction to Seed Plants: Gymnosperms

Seed Plants: Angiosperms

Flowering Plants and Civilization

Ecology

Biomes

Filters