Question 1

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 2

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 3

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 these. 
A)  Increasing stem growth. 
B)  Reversing genetic dwarfism. 
C)  Breaking seed dormancy. 
D)  Stimulate growth at lower temperatures. 
E)  All of these.

Question 4

Grass leaves may roll up in dry weather when certain cells lose their turgor.

Accepted Answer

A) True 
 B)False

Question 5

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 6

Apical dominance can be offset with an application of cytokinins to axillary buds.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following functions as a precursor in the synthesis of gibberellins?

Accepted Answer

A)  Vitamin A. 
B)  Cytokinin. 
C)  Vitamin D. 
D)  Acetyl CoA. 
E)  Starch. 
A)  Vitamin A. 
B)  Cytokinin. 
C)  Vitamin D. 
D)  Acetyl CoA. 
E)  Starch.

Question 8

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 9

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 10

Garner and Allard were responsible for coining the term photoperiodism.

Accepted Answer

A) True 
 B)False

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

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 13

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 14

Differentiation refers to changes in the structure of a cell so that it can perform a specific function.

Accepted Answer

A) True 
 B)False

Question 15

Naturally occurring and synthetic __________ such as 2,4-D, are the basis of many 'weed killers', especially for broad leaf weeds in lawns.

Accepted Answer

A)  abscicic acid 
B)  auxins 
C)  cytokinins 
D)  ethylene 
E)  gibberellins 
A)  abscicic acid 
B)  auxins 
C)  cytokinins 
D)  ethylene 
E)  gibberellins

Question 16

A precursor is

Accepted Answer

A)  a traveling electron. 
B)  a growth-regulating substance. 
C)  a simple molecule that is converted to a more complex molecule. 
D)  a gene that determines writing style. 
E)  one who is predisposed to using profanity. 
A)  a traveling electron. 
B)  a growth-regulating substance. 
C)  a simple molecule that is converted to a more complex molecule. 
D)  a gene that determines writing style. 
E)  one who is predisposed to using profanity.

Question 17

The applications of certain gibberellins to a lawn can cause it to turn green earlier in the spring.

Accepted Answer

A) True 
 B)False

Question 18

Phenylacetic acid (PAA)is a/an ____________.

Accepted Answer

A)  gibberellin 
B)  auxin 
C)  cytokinin 
D)  an ethylene derivative 
E)  none of these answers are correct 
A)  gibberellin 
B)  auxin 
C)  cytokinin 
D)  an ethylene derivative 
E)  none of these answers are correct

Question 19

Absicsic acid is associated with maintaining ___________ in buds and seeds.

Accepted Answer

A)  turgor pressure 
B)  color 
C)  dormancy 
D)  growth and development 
E)  steady rates of cell division 
A)  turgor pressure 
B)  color 
C)  dormancy 
D)  growth and development 
E)  steady rates of cell division

Question 20

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.

Exam 11: Growth

Hormones differ from vitamins in all of the following ways EXCEPT

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

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

Grass leaves may roll up in dry weather when certain cells lose their turgor.

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

Apical dominance can be offset with an application of cytokinins to axillary buds.

Which of the following functions as a precursor in the synthesis of gibberellins?

Which of the following statements is correct?

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

Garner and Allard were responsible for coining the term photoperiodism.

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

An important commercial use of auxin is to

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

Differentiation refers to changes in the structure of a cell so that it can perform a specific function.

Naturally occurring and synthetic __________ such as 2,4-D, are the basis of many 'weed killers', especially for broad leaf weeds in lawns.

A precursor is

The applications of certain gibberellins to a lawn can cause it to turn green earlier in the spring.

Phenylacetic acid (PAA)is a/an ____________.

Absicsic acid is associated with maintaining ___________ in buds and seeds.

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

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 Kingdombacteria, Domain King-Domarchaea, 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

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