Question 1

A realized niche can be larger than a fundamental niche

Accepted Answer

A) never. 
B) when a competitor is present. 
C) when abiotic conditions improve. 
D) when a commensal species expands another's niche space. 
A) never. 
B) when a competitor is present. 
C) when abiotic conditions improve. 
D) when a commensal species expands another's niche space.

Question 2

________ occurs when two species undergo reciprocal evolutionary change through natural selection.

Accepted Answer

The answer of ________ occurs when two species undergo reciprocal...

Question 3

Two species of cattail (Typha)live in shallow water along the shoreline of ponds.Although T.agustifolia can live by itself in water 0-20 cm deep,in the presence of T.latifolia,it occurs only in water > 20 cm deep,whereas T.latifolia occurs in shallower water.In this example,T.agustifolia is limited by competition exploiting its

Accepted Answer

A) ecological niche. 
B) fundamental niche. 
C) realized niche. 
D) physiological niche. 
A) ecological niche. 
B) fundamental niche. 
C) realized niche. 
D) physiological niche.

Question 4

The carrying capacity for species 1 is 1000 and for its competitor,species 2,it is 500.What is the maximum abundance of species 1 if 250 of species 2 coexists with it?

Accepted Answer

A) 250 
B) 1000 
C) 500 
D) 1250 
A) 250 
B) 1000 
C) 500 
D) 1250

Question 5

Adaptive radiation is often the result of

Accepted Answer

A) lack of predation. 
B) excess nutrients. 
C) resource competition. 
D) abiotic factors. 
A) lack of predation. 
B) excess nutrients. 
C) resource competition. 
D) abiotic factors.

Question 6

Species having wide geographic distributions generally encounter a broader range of physical environmental conditions than species whose distribution is more restricted.

Accepted Answer

A) True 
 B)False

Question 7

As two competing species approach their respective carrying capacities,the growth rate of the other species

Accepted Answer

A) accelerates. 
B) is unaffected. 
C) is doubled. 
D) slows down. 
A) accelerates. 
B) is unaffected. 
C) is doubled. 
D) slows down.

Question 8

Most interspecific interactions are exclusive,involving only two species.

Accepted Answer

A) True 
 B)False

Question 9

Mycorrhizal fungi have a mutually beneficial relationship with plants in environments with soils that

Accepted Answer

A) are saturated with water. 
B) have a high clay content. 
C) are acidic. 
D) are low in nutrients. 
A) are saturated with water. 
B) have a high clay content. 
C) are acidic. 
D) are low in nutrients.

Question 10

When one species reduces or adversely affects the population of another,but the affected species has no influence in return,the relationship is referred to as ________.

Accepted Answer

The answer of When one species reduces or adversely affects...

Question 11

What is the difference between a parasite and a parasitoid?

Accepted Answer

A) A parasite is larger. 
B) A parasitoid is harmless to the host. 
C) A parasite has only one host. 
D) A parasitoid typically always kill its host. 
A) A parasite is larger. 
B) A parasitoid is harmless to the host. 
C) A parasite has only one host. 
D) A parasitoid typically always kill its host.

Question 12

Adaptive radiation can result from divergent adaptations to avoid predators.

Accepted Answer

A) True 
 B)False

Question 13

Owl species A has a carrying capacity of 2000,while another owl species B has a carrying capacity of 200.What is the logical conclusion of this?

Accepted Answer

A) Species A is larger than B. 
B) Species B uses more resources per individual. 
C) Species A uses more habitat per individual. 
D) Species B feeds on A. 
A) Species A is larger than B. 
B) Species B uses more resources per individual. 
C) Species A uses more habitat per individual. 
D) Species B feeds on A.

Question 14

A remora feeds on the scraps that escape from a shark's mouth while feeding.It has no clear positive or negative impact on the shark.This is an example of

Accepted Answer

A) competition. 
B) commensalism. 
C) amensalism. 
D) neutral. 
A) competition. 
B) commensalism. 
C) amensalism. 
D) neutral.

Question 15

As the population of a predator increases,the

Accepted Answer

A) population of the prey species decreases. 
B) birthrate of the prey species increases. 
C) mortality rate of the prey species decreases. 
D) proportion of the prey population that is captured and consumed decreases. 
A) population of the prey species decreases. 
B) birthrate of the prey species increases. 
C) mortality rate of the prey species decreases. 
D) proportion of the prey population that is captured and consumed decreases.

Exam 12: Species Interactions, population Dynamics, and Natural Selection

A realized niche can be larger than a fundamental niche

________ occurs when two species undergo reciprocal evolutionary change through natural selection.

The carrying capacity for species 1 is 1000 and for its competitor,species 2,it is 500.What is the maximum abundance of species 1 if 250 of species 2 coexists with it?

Adaptive radiation is often the result of

Species having wide geographic distributions generally encounter a broader range of physical environmental conditions than species whose distribution is more restricted.

As two competing species approach their respective carrying capacities,the growth rate of the other species

Most interspecific interactions are exclusive,involving only two species.

Mycorrhizal fungi have a mutually beneficial relationship with plants in environments with soils that

When one species reduces or adversely affects the population of another,but the affected species has no influence in return,the relationship is referred to as ________.

What is the difference between a parasite and a parasitoid?

Adaptive radiation can result from divergent adaptations to avoid predators.

Owl species A has a carrying capacity of 2000,while another owl species B has a carrying capacity of 200.What is the logical conclusion of this?

A remora feeds on the scraps that escape from a shark's mouth while feeding.It has no clear positive or negative impact on the shark.This is an example of

As the population of a predator increases,the

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

Interspecific Competition

Predation

Parasitism and Mutualism

Community Structure

Factors Influencing the Structure of Communities

Community Dynamics

Landscape Dynamics

Ecosystem Energetics

Decomposition and Nutrient Cycling

Biogeochemical Cycles

Terrestrial Ecosystems

Aquatic Ecosystems

Coastal and Wetland Ecosystems

Large-Scale Patterns of Biological Diversity

The Ecology of Climate Change

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