Question 1

Which element is not a heavy metal?

Accepted Answer

A)   Cadmium
B)   Chromium
C)   Lead
D)   Mercury
E)   Sulfur

Question 2

Secondary metabolites

Accepted Answer

A)   are essential for basic cellular processes in the plant body.
B)   are similar in all plants.
C)   occur more often in animals than in plants.
D)   may attract or inhibit other organisms.
E)   are usually of high molecular weight.

Question 3

Which trait is not an adaptation to dry environments?

Accepted Answer

A)   Aerenchyma
B)   Hairy leaves
C)   A heavier cuticle over the leaf epidermis
D)   Sunken stomata
E)   A root system that grows each rainy season and dies back when it is dry

Question 4

A wound from the bite of an herbivore is not likely to trigger

Accepted Answer

A)   membrane signaling through a change in electrical potential.
B)   induced production of resistance (R)  genes.
C)   production of reactive oxygen species that lead to changes in gene expression.
D)   hormone signaling to produce an appropriate response by the plant.
E)   production of jasmonic acid to trigger systemic defenses.

Question 5

Drought stress can lead to the increased production of

Accepted Answer

A)   LEA proteins.
B)   PAMPs.
C)   JAZ.
D)   protease inhibitors.
E)   phytoalexins.

Question 6

Salinization of agricultural land is a serious and growing problem.Which proposed solution would be the most effective way to slow this trend?

Accepted Answer

A)   Reverse climate change to prevent the ocean from claiming agricultural land.
B)   Engineer all important types of crops to become more salt tolerant.
C)   Phytoremediation of agricultural fields with halophyte plants.
D)   Irrigate crops using efficient systems that do not spread excess water across the soil.
E)   Harvest trees to turn forested land into new agricultural fields.

Question 7

Phytoalexins are

Accepted Answer

A)   proteins.
B)   antibiotics.
C)   nucleotides.
D)   RNAs.
E)   hormones.

Question 8

If plants that absorb 50 times the normal amount of soil manganese are not susceptible to a particular fungal blight, the best conclusion is that this fungus is unable to infect plants that _______ manganese.

Accepted Answer

A)   contain
B)   hyperaccumulate
C)   translocate
D)   chelate
E)   exclude

Question 9

If a plant fossil shows evidence of extensive aerenchyma, this plant likely grew in habitats that were

Accepted Answer

A)   subject to drought.
B)   frozen.
C)   flooded.
D)   dehydrated.
E)   saline.

Question 10

A plant that acclimates to cold temperatures is most likely to do so through

Accepted Answer

A)   cold-hardening.
B)   heat shock.
C)   frost tolerance.
D)   adaptation.
E)   clinal variation.

Question 11

Which of the following are produced by plants for defense through an increase in gene expression in response to the presence of a pathogen?

Accepted Answer

A)   PR proteins
B)   Elicitors
C)   Enzymes
D)   PAMPs
E)   Heat shock proteins

Question 12

Systemic acquired resistance can be very specific (for example, protecting a plant against RNA viruses).It can also be much more general, for example, involving _______, which induces genes to produce various pathogen fighting proteins and can even be modified to carry an airborne warning signal to other plants.

Accepted Answer

The answer of Systemic acquired resistance can be very specific...

Question 13

Which change would most likely be observed in the cell membranes of a plant in response to sudden and severe cold?

Accepted Answer

A)   An increase in the proportion of proteins
B)   A decrease in the proportion of proteins
C)   An increase in the proportion of saturated fatty acids
D)   An increase in the proportion of unsaturated fatty acids
E)   Induced cell death in certain parts of the plant

Question 14

Gene-for-gene resistance is an example of

Accepted Answer

A)   an inducible defense.
B)   a signal transduction pathway.
C)   an evolutionary arms race.
D)   a defense against herbivory.
E)   phytoremediation.

Question 15

Nicotine in tobacco and pyrethrin in chrysanthemums are secondary metabolites that act as _______.

Accepted Answer

The answer of Nicotine in tobacco and pyrethrin in chrysanthemums...

Question 16

Which statement about the role of jasmonate in protecting plants from herbivory is false?

Accepted Answer

A)   Jasmonate is produced from a membrane lipid.
B)   Jasmonate travels to other parts of the plant through the phloem.
C)   Jasmonate acts by binding to a plasma membrane receptor.
D)   Jasmonate induces the formation of a protein that inhibits proteases.
E)   Jasmonate is a hormone.

Question 17

_______ are antifeeding secondary metabolites used by plants for defense.

Accepted Answer

A)   Monoterpenes
B)   Triterpenes
C)   Flavonoids
D)   Anthocyanins
E)   Polyterpenes

Question 18

The pneumatophores of swamp plants are modified

Accepted Answer

A)   flowers.
B)   leaves.
C)   roots.
D)   spines.
E)   stems.

Question 19

A plant that thrives in Iceland, where it is exposed to freezing night temperatures and warm days, most likely produces _______ proteins.

Accepted Answer

A)   cytoskeletal
B)   heat shock
C)   transcription factor
D)   antifreeze
E)   thaw-inducing

Question 20

A scientist looking for soil high in cadmium would most likely be successful by locating plants that _______ cadmium.

Accepted Answer

A)   expel
B)   secrete
C)   chelate
D)   hyperaccumulate
E)   avoid

Exam 38: Plant Responses to Environmental Challenges

A plant that acclimates to cold temperatures is most likely to do so through

Correct Answer
verified

Which of the following are produced by plants for defense through an increase in gene expression in response to the presence of a pathogen?

Correct Answer
verified

Drought stress can lead to the increased production of

Correct Answer
verified

Gene-for-gene resistance is an example of

Correct Answer
verified

If plants that absorb 50 times the normal amount of soil manganese are not susceptible to a particular fungal blight, the best conclusion is that this fungus is unable to infect plants that _______ manganese.

Correct Answer
verified

A scientist looking for soil high in cadmium would most likely be successful by locating plants that _______ cadmium.

Correct Answer
verified

Phytoalexins are

Correct Answer
verified

The pneumatophores of swamp plants are modified

Correct Answer
verified

Which element is not a heavy metal?

Correct Answer
verified

Which change would most likely be observed in the cell membranes of a plant in response to sudden and severe cold?

Correct Answer
verified

Salinization of agricultural land is a serious and growing problem.Which proposed solution would be the most effective way to slow this trend?

Correct Answer
verified

_______ are antifeeding secondary metabolites used by plants for defense.

Correct Answer
verified

Which trait is not an adaptation to dry environments?

Correct Answer
verified

A wound from the bite of an herbivore is not likely to trigger

Correct Answer
verified

A plant that thrives in Iceland, where it is exposed to freezing night temperatures and warm days, most likely produces _______ proteins.

Correct Answer
verified

Which statement about the role of jasmonate in protecting plants from herbivory is false?

Correct Answer
verified

If a plant fossil shows evidence of extensive aerenchyma, this plant likely grew in habitats that were

Correct Answer
verified

Secondary metabolites

Correct Answer
verified

Correct Answer
verified

Nicotine in tobacco and pyrethrin in chrysanthemums are secondary metabolites that act as _______.

Correct Answer
verified

Exam 38: Plant Responses to Environmental Challenges

A plant that acclimates to cold temperatures is most likely to do so through

Correct AnswerverifiedShow Answer

Which of the following are produced by plants for defense through an increase in gene expression in response to the presence of a pathogen?

Correct AnswerverifiedShow Answer

Drought stress can lead to the increased production of

Correct AnswerverifiedShow Answer

Gene-for-gene resistance is an example of

Correct AnswerverifiedShow Answer

If plants that absorb 50 times the normal amount of soil manganese are not susceptible to a particular fungal blight, the best conclusion is that this fungus is unable to infect plants that _______ manganese.

Correct AnswerverifiedShow Answer

A scientist looking for soil high in cadmium would most likely be successful by locating plants that _______ cadmium.

Correct AnswerverifiedShow Answer

Phytoalexins are

Correct AnswerverifiedShow Answer

The pneumatophores of swamp plants are modified

Correct AnswerverifiedShow Answer

Which element is not a heavy metal?

Correct AnswerverifiedShow Answer

Which change would most likely be observed in the cell membranes of a plant in response to sudden and severe cold?

Correct AnswerverifiedShow Answer

Salinization of agricultural land is a serious and growing problem.Which proposed solution would be the most effective way to slow this trend?

Correct AnswerverifiedShow Answer

_______ are antifeeding secondary metabolites used by plants for defense.

Correct AnswerverifiedShow Answer

Which trait is not an adaptation to dry environments?

Correct AnswerverifiedShow Answer

A wound from the bite of an herbivore is not likely to trigger

Correct AnswerverifiedShow Answer

A plant that thrives in Iceland, where it is exposed to freezing night temperatures and warm days, most likely produces _______ proteins.

Correct AnswerverifiedShow Answer

Which statement about the role of jasmonate in protecting plants from herbivory is false?

Correct AnswerverifiedShow Answer

If a plant fossil shows evidence of extensive aerenchyma, this plant likely grew in habitats that were

Correct AnswerverifiedShow Answer

Secondary metabolites

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Nicotine in tobacco and pyrethrin in chrysanthemums are secondary metabolites that act as _______.

Correct AnswerverifiedShow Answer

Correct Answer
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