Question 1

Nectar is often produced by plants as an enticement or reward for pollinating animals.

Accepted Answer

A) True 
 B)False  True

Question 2

Mycorrhizae are nitrogen-fixing bacteria living within the roots of certain tropical trees.

Accepted Answer

A) True 
 B)False  False

Question 3

Why might a pine seed not have a wing to disperse via air currents?

Accepted Answer

A) adapted to grow near parent tree 
B) wing adapted to provide extra protection 
C) lack of a seed coat on the pine seed 
D) spread via birds instead 
A) adapted to grow near parent tree 
B) wing adapted to provide extra protection 
C) lack of a seed coat on the pine seed 
D) spread via birds instead C

Question 4

After infection occurs,the first line of defense for a host against a parasite is the ________ response.

Accepted Answer

The answer of After infection occurs,the first line of defense...

Question 5

When the bacteria Wolbachia infects the wasp Nasonia vitripennis,what happens?

Accepted Answer

A) The wasp dies immediately. 
B) Female wasps produce less offspring. 
C) Females wasps produce more offspring. 
D) Female wasps are unable to produce offspring. 
A) The wasp dies immediately. 
B) Female wasps produce less offspring. 
C) Females wasps produce more offspring. 
D) Female wasps are unable to produce offspring.

Question 6

The formation of scabs on the skin and cysts in the muscles of animals in response to a parasite are examples of an inflammatory response.

Accepted Answer

A) True 
 B)False

Question 7

The outcome of an infection is called a(n)________.

Accepted Answer

The answer of The outcome of an infection is called...

Question 8

Zooxanthellae are photosynthetic algae living within the tissues of reef-forming corals.

Accepted Answer

A) True 
 B)False

Question 9

While foraging on grass,white-tailed deer occasionally ingest snails or slugs that host larvae of the meningeal worm.The worm larvae mature inside the deer and eventually are passed out with the feces.The snails acquire the larvae as they come into contact with deer feces on the ground.The snails are an example of a(n)

Accepted Answer

A) intermediate host. 
B) direct host. 
C) definitive host. 
D) macrohost. 
A) intermediate host. 
B) direct host. 
C) definitive host. 
D) macrohost.

Question 10

Holoparasites are plants that lack chlorophyll and are thus nonphotosynthetic,relying totally on a host's tissues for nutrition.

Accepted Answer

A) True 
 B)False

Question 11

Plants that rely on ants to disperse their seeds have an ant-attracting food body on the seed coat referred to as a(n)________.

Accepted Answer

The answer of Plants that rely on ants to disperse...

Question 12

Which of the following factors is most strongly reduced with increased forest size?

Accepted Answer

A) density of nymphs 
B) percent nymphs infected 
C) density of infected nymphs 
D) density of deer infected 
A) density of nymphs 
B) percent nymphs infected 
C) density of infected nymphs 
D) density of deer infected

Question 13

Which of the following uses a mosquito as a vector?

Accepted Answer

A) Anopholes 
B) Parelaphostrongylus 
C) Plasmodium 
D) Borrelia 
A) Anopholes 
B) Parelaphostrongylus 
C) Plasmodium 
D) Borrelia

Question 14

Some parasitic plants are spread from one plant to another by direct transmission.

Accepted Answer

A) True 
 B)False

Question 15

The production of antibodies that results from the entrance of a foreign object such as a virus or bacterium,into the bloodstream of a host is referred to as

Accepted Answer

A) allelopathy. 
B) a behavioral response. 
C) an inflammatory response. 
D) an immune response. 
A) allelopathy. 
B) a behavioral response. 
C) an inflammatory response. 
D) an immune response.

Question 16

The intimate and protracted association between two or more organisms of different species is referred to as

Accepted Answer

A) mutualism. 
B) parasitism. 
C) commensalism. 
D) symbiosis. 
A) mutualism. 
B) parasitism. 
C) commensalism. 
D) symbiosis.

Question 17

The meningeal worm matures into an adult in the white-tailed deer.The deer are referred to as

Accepted Answer

A) an intermediate host. 
B) a definitive host. 
C) an intermediate vector. 
D) a definitive vector. 
A) an intermediate host. 
B) a definitive host. 
C) an intermediate vector. 
D) a definitive vector.

Question 18

Which of the following is the definitive host?

Accepted Answer

A) deer 
B) soil 
C) snail 
D) free living stage 
A) deer 
B) soil 
C) snail 
D) free living stage

Question 19

In a commensalistic relationship between two species,only one species benefits without significantly affecting the other.

Accepted Answer

A) True 
 B)False

Question 20

If the competition coefficient α is positive,that likely means

Accepted Answer

A) that the two species are strong competitors. 
B) that the two species are predator and prey. 
C) that the species are mutualistic. 
D) that only one of the species will survive. 
A) that the two species are strong competitors. 
B) that the two species are predator and prey. 
C) that the species are mutualistic. 
D) that only one of the species will survive.

Exam 15: Parasitism and Mutualism

Nectar is often produced by plants as an enticement or reward for pollinating animals.

Mycorrhizae are nitrogen-fixing bacteria living within the roots of certain tropical trees.

Why might a pine seed not have a wing to disperse via air currents?

After infection occurs,the first line of defense for a host against a parasite is the ________ response.

When the bacteria Wolbachia infects the wasp Nasonia vitripennis,what happens?

The formation of scabs on the skin and cysts in the muscles of animals in response to a parasite are examples of an inflammatory response.

The outcome of an infection is called a(n)________.

Zooxanthellae are photosynthetic algae living within the tissues of reef-forming corals.

Holoparasites are plants that lack chlorophyll and are thus nonphotosynthetic,relying totally on a host's tissues for nutrition.

Plants that rely on ants to disperse their seeds have an ant-attracting food body on the seed coat referred to as a(n)________.

Which of the following factors is most strongly reduced with increased forest size?

Which of the following uses a mosquito as a vector?

Some parasitic plants are spread from one plant to another by direct transmission.

The production of antibodies that results from the entrance of a foreign object such as a virus or bacterium,into the bloodstream of a host is referred to as

The intimate and protracted association between two or more organisms of different species is referred to as

The meningeal worm matures into an adult in the white-tailed deer.The deer are referred to as

Which of the following is the definitive host?

In a commensalistic relationship between two species,only one species benefits without significantly affecting the other.

If the competition coefficient α is positive,that likely means

The Nature of Ecology

Climate

The Aquatic Environment

The Terrestrial Environment

Adaptation and Natural Selection

Plant Adaptations to the Environment

Animal Adaptations to the Environment

Properties of Populations

Population Growth

Life History

Intraspecific Population Regulation

Species Interactions, population Dynamics, and Natural Selection

Interspecific Competition

Predation

Community Structure

Factors Influencing the Structure of Communities

Community Dynamics

Landscape Dynamics

Ecosystem Energetics

Decomposition and Nutrient Cycling

Biogeochemical Cycles

Terrestrial Ecosystems

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Coastal and Wetland Ecosystems

Large-Scale Patterns of Biological Diversity

The Ecology of Climate Change

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