Question 1

Plants produce antibiotics called _______ within hours of infection by fungi or bacteria.

Accepted Answer

The answer of Plants produce antibiotics called _______ within hours...

Question 2

Gene-for-gene resistances depend on which of the following?

Accepted Answer

A)  Compatible alleles in plant and pathogen 
B)  Incompatible alleles in plant and pathogen 
C)  Recessive Avr genes 
D)  Recessive R genes 
E)  PR proteins 
A)  Compatible alleles in plant and pathogen 
B)  Incompatible alleles in plant and pathogen 
C)  Recessive Avr genes 
D)  Recessive R genes 
E)  PR proteins

Question 3

Which of the following would not act as a deterrent to being eaten by herbivores?

Accepted Answer

A)  Canavanine 
B)  Latex 
C)  Thorns 
D)  Protein amino acids 
E)  Some PR proteins 
A)  Canavanine 
B)  Latex 
C)  Thorns 
D)  Protein amino acids 
E)  Some PR proteins

Question 4

Caterpillars feasting on a leaf often

Accepted Answer

A)  are stunted because they ingest a protease inhibitor. 
B)  induce the formation of phytoalexins. 
C)  make a plant grow faster. 
D)  grow faster because they ingest PR proteins. 
E)  induce the formation of the hypersensitive response. 
A)  are stunted because they ingest a protease inhibitor. 
B)  induce the formation of phytoalexins. 
C)  make a plant grow faster. 
D)  grow faster because they ingest PR proteins. 
E)  induce the formation of the hypersensitive response.

Question 5

Which statement about heat shock proteins is false?

Accepted Answer

A)  They are formed in response to heat stress. 
B)  They include chaperonins. 
C)  They are formed within minutes of the exposure of a plant to elevated temperatures. 
D)  Their amount may be increased by an abscisic acid signal transduction pathway. 
E)  The threshold temperature to induce their synthesis is the same in all plants. 
A)  They are formed in response to heat stress. 
B)  They include chaperonins. 
C)  They are formed within minutes of the exposure of a plant to elevated temperatures. 
D)  Their amount may be increased by an abscisic acid signal transduction pathway. 
E)  The threshold temperature to induce their synthesis is the same in all plants.

Question 6

Halophytes are different from all other types of plants in that they

Accepted Answer

A)  can accumulate sodium and chloride ions. 
B)  have a positive water potential. 
C)  contain no sodium or chloride ions. 
D)  contain no stomata. 
E)  All of the above 
A)  can accumulate sodium and chloride ions. 
B)  have a positive water potential. 
C)  contain no sodium or chloride ions. 
D)  contain no stomata. 
E)  All of the above

Question 7

Grazed plants may exhibit increased productivity because of

Accepted Answer

A)  increased photosynthetic rates. 
B)  growth of more stems. 
C)  greater fruit production. 
D)  All of the above 
E)  None of the above 
A)  increased photosynthetic rates. 
B)  growth of more stems. 
C)  greater fruit production. 
D)  All of the above 
E)  None of the above

Question 8

Some plants subjected to herbivory undergo increased _______.

Accepted Answer

photosynthetic produ

Question 9

Large molecules called _______ proteins are produced as a defense against infection and in cleanup operations.

Accepted Answer

pathogenes

Question 10

Halophytes accumulate sodium and chloride ions and transport these substances to their _______.

Accepted Answer

The answer of Halophytes accumulate sodium and chloride ions and...

Question 11

Which of the following conditions stimulates the production of heat shock proteins?

Accepted Answer

A)  Abnormally high temperatures only 
B)  Abnormally low temperatures only 
C)  Both abnormally high and abnormally low temperatures 
D)  Heat shock proteins are continually available in a plant, no matter what the temperature. 
E)  None of the above 
A)  Abnormally high temperatures only 
B)  Abnormally low temperatures only 
C)  Both abnormally high and abnormally low temperatures 
D)  Heat shock proteins are continually available in a plant, no matter what the temperature. 
E)  None of the above

Exam 39: Plant Responses to Environmental Challenges

Plants produce antibiotics called _______ within hours of infection by fungi or bacteria.

Gene-for-gene resistances depend on which of the following?

Which of the following would not act as a deterrent to being eaten by herbivores?

Caterpillars feasting on a leaf often

Which statement about heat shock proteins is false?

Halophytes are different from all other types of plants in that they

Grazed plants may exhibit increased productivity because of

Some plants subjected to herbivory undergo increased _______.

Large molecules called _______ proteins are produced as a defense against infection and in cleanup operations.

Halophytes accumulate sodium and chloride ions and transport these substances to their _______.

Which of the following conditions stimulates the production of heat shock proteins?

Studying Life

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Nucleic Acids and the Origin of Life

Cells: the Working Units of Life

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Energy, Enzymes, and Metabolism

Pathways That Harvest Chemical Energy

Photosynthesis: Energy From Sunlight

The Cell Cycle and Cell Division

Inheritance, Genes, and Chromosomes

Dna and Its Role in Heredity

From Dna to Protein: Gene Expression

Gene Mutation and Molecular Medicine

Regulation of Gene Expression

Genomes

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Differential Gene Expression in Development

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Bacteria and Archaea: the Prokaryotic Domains

The Origin and Diversification of Eukaryotes

Plants Without Seeds: From Water to Land

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Physiology, Homeostasis, and Temperature Regulation

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