Question 1

Which type of food plant/algae is subject to the highest levels of herbivory by herbivores?

Accepted Answer

A)   Terrestrial plants
B)   Aquatic plants
C)   Aquatic algae
D)   Terrestrial algaeE) B) and D)
F) A) and C)

Question 2

In Australia, nearly 90% of cactus plants on islands with cattle have spines whereas on islands with no grazers, only about 20% of the pads possess them. This supports the idea of

Accepted Answer

A)   Plant apparency
B)   Constitutive defenses
C)   The optimal defense hypothesis
D)   Induced defenses
E)   The carbon-nitrogen balance hypothesisF) None of the above
G) B) and D)

Question 3

Which of the following examples shows a strong impact of herbivores on native vegetation?

Accepted Answer

A)   Beetles on klamath weed in California
B)   Weevils on floating fern in New Guinea
C)   Goats on Santa Catalina island
D)   Moths on prickly pear in Australia
E)   Toads on waterweeds in New JerseyF) B) and C)
G) C) and D)

Question 4

Animal tissue generally contains about ____ times as much nitrogen as plant tissue, so high nitrogen plants are favored by herbivores.

Accepted Answer

A)   2
B)   5
C)   10
D)   20
E)   50F) All of the above
G) A) and B)

Question 5

Why don't we see more plant material eaten by herbivores?

Accepted Answer

A)   Herbivore populations self regulate
B)   Natural enemies reduce herbivore densities
C)   Plants have chemical and mechanical defenses
D)   a and b
E)   b and cF) C) and D)
G) B) and D)

Question 6

Invertebrate grazers, such as grasshoppers, tend to have greater impacts on host plants than vertebrate grazers, such as bison.

Accepted Answer

A) True 
 B)False

Question 7

Unapparent plants

Accepted Answer

A)   Are large and difficult to find
B)   Have qualitative defenses
C)   Have defenses which guard against specialist herbivores
D)   Often occur in monocultures
E)   Are long livedF) B) and C)
G) B) and D)

Question 8

The flavors of chocolate and vanilla come from

Accepted Answer

A)   Tannins
B)   Terpenes
C)   Lignins
D)   Flavonoids
E)   AlkaloidsF) A) and B)
G) A) and C)

Question 9

Organisms generally have to digest large amounts of plants containing phenolics to discourage them from feeding.

Accepted Answer

A) True 
 B)False

Exam 14: Herbivory

Organisms generally have to digest large amounts of plants containing phenolics to discourage them from feeding.

Correct Answer
verified

Which of the following examples shows a strong impact of herbivores on native vegetation?

Correct Answer
verified

Invertebrate grazers, such as grasshoppers, tend to have greater impacts on host plants than vertebrate grazers, such as bison.

Correct Answer
verified

The flavors of chocolate and vanilla come from

Correct Answer
verified

Animal tissue generally contains about ____ times as much nitrogen as plant tissue, so high nitrogen plants are favored by herbivores.

Correct Answer
verified

Which type of food plant/algae is subject to the highest levels of herbivory by herbivores?

Correct Answer
verified

Why don't we see more plant material eaten by herbivores?

Correct Answer
verified

In Australia, nearly 90% of cactus plants on islands with cattle have spines whereas on islands with no grazers, only about 20% of the pads possess them. This supports the idea of

Correct Answer
verified

Unapparent plants

Correct Answer
verified

Exam 14: Herbivory

Organisms generally have to digest large amounts of plants containing phenolics to discourage them from feeding.

Correct AnswerverifiedShow Answer

Which of the following examples shows a strong impact of herbivores on native vegetation?

Correct AnswerverifiedShow Answer

Invertebrate grazers, such as grasshoppers, tend to have greater impacts on host plants than vertebrate grazers, such as bison.

Correct AnswerverifiedShow Answer

The flavors of chocolate and vanilla come from

Correct AnswerverifiedShow Answer

Animal tissue generally contains about ____ times as much nitrogen as plant tissue, so high nitrogen plants are favored by herbivores.

Correct AnswerverifiedShow Answer

Which type of food plant/algae is subject to the highest levels of herbivory by herbivores?

Correct AnswerverifiedShow Answer

Why don't we see more plant material eaten by herbivores?

Correct AnswerverifiedShow Answer

In Australia, nearly 90% of cactus plants on islands with cattle have spines whereas on islands with no grazers, only about 20% of the pads possess them. This supports the idea of

Correct AnswerverifiedShow Answer

Unapparent plants

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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