Question 1

Which of the following is a density-independent factor?

Accepted Answer

A) weather event 
B) food availability 
C) shelter availability 
D) availability of mates 
A) weather event 
B) food availability 
C) shelter availability 
D) availability of mates A

Question 2

This figures illustrates that territory size is positively correlated with

Accepted Answer

A) density. 
B) body size. 
C) feeding type. 
D) rainfall. 
A) density. 
B) body size. 
C) feeding type. 
D) rainfall. B

Question 3

The presence of a uniform distribution among plants is often used as an indication that ________ is occurring.

Accepted Answer

competition

Question 4

________ competition occurs when some competing individuals obtain enough resources for themselves while denying resources to others.

Accepted Answer

The answer of ________ competition occurs when some competing individuals...

Question 5

High-density conditions caused no noticeable change in the behavior of experimental wood frog (Rana sylvatica)tadpoles.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following is negatively correlated with territory size?

Accepted Answer

A) bird size 
B) bird density 
C) number of offspring 
D) number of mates 
A) bird size 
B) bird density 
C) number of offspring 
D) number of mates

Question 7

In logistic growth,the point at which population growth ceases is referred to as the

Accepted Answer

A) threshold of security. 
B) Malthusian parameter. 
C) saturation point. 
D) carrying capacity. 
A) threshold of security. 
B) Malthusian parameter. 
C) saturation point. 
D) carrying capacity.

Question 8

Dispersal is not a population regulatory mechanism.

Accepted Answer

A) True 
 B)False

Question 9

Factors that influence population growth but do not change systematically with the density of the population are called density-________ factors.

Accepted Answer

The answer of Factors that influence population growth but do...

Question 10

A plant grown at high density will produce ________ seeds than the same plant grown at low density.

Accepted Answer

The answer of A plant grown at high density will...

Question 11

Scramble competition results in some individuals in the population getting more resources than others.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following is equal to (1 - N/K)?

Accepted Answer

A) (N - K)/K 
B) (K - N)/K 
C) (K - N)/N 
D) (N - K)/N 
A) (N - K)/K 
B) (K - N)/K 
C) (K - N)/N 
D) (N - K)/N

Question 13

When extreme contest competition occurs within a population,

Accepted Answer

A) all individuals receive insufficient resources for survival and reproduction. 
B) local extinction may occur. 
C) only a portion of the population suffers. 
D) the growth rate of the population increases. 
A) all individuals receive insufficient resources for survival and reproduction. 
B) local extinction may occur. 
C) only a portion of the population suffers. 
D) the growth rate of the population increases.

Question 14

The influence of density-independent factors on populations is generally less predictable than the influence of density-dependent factors.

Accepted Answer

A) True 
 B)False

Question 15

In a wolf pack,the beta male

Accepted Answer

A) mates with all the females of the pack. 
B) is subordinate to the alpha female. 
C) is dominant over all members of the pack. 
D) is usually closely related to the alpha male. 
A) mates with all the females of the pack. 
B) is subordinate to the alpha female. 
C) is dominant over all members of the pack. 
D) is usually closely related to the alpha male.

Question 16

Plants can capture and defend space.

Accepted Answer

A) True 
 B)False

Question 17

Root competition among neighboring plants was studied by growing plants with their roots inside tubes of PVC pipes.Some tubes had holes of varying sizes,allowing their neighbors' roots to enter the tubes of a target plant.As the percentage of a target plant's tube open to neighbors' roots increased,

Accepted Answer

A) both target plant biomass and neighbor plant root biomass decreased. 
B) target plant biomass decreased and neighbor plant root biomass increased. 
C) target plant biomass increased and neighbor plant root biomass decreased. 
D) both target plant biomass and neighbor plant root biomass increased. 
A) both target plant biomass and neighbor plant root biomass decreased. 
B) target plant biomass decreased and neighbor plant root biomass increased. 
C) target plant biomass increased and neighbor plant root biomass decreased. 
D) both target plant biomass and neighbor plant root biomass increased.

Question 18

As population density increases in harp seals (Phoca groenlandica),females

Accepted Answer

A) become sexually mature at a smaller body size. 
B) refuse to mate with males. 
C) begin reproduction at a later age. 
D) often cannibalize their own offspring. 
A) become sexually mature at a smaller body size. 
B) refuse to mate with males. 
C) begin reproduction at a later age. 
D) often cannibalize their own offspring.

Question 19

The rate of aggressive interactions among individuals increases as population density increases.

Accepted Answer

A) True 
 B)False

Question 20

Under the logistic growth model,the rate of population growth is highest when

Accepted Answer

A) N = K 
B) N = K/2 
C) N = r 
D) N = (1 - N/K) 
A) N = K 
B) N = K/2 
C) N = r 
D) N = (1 - N/K)

Exam 11: Intraspecific Population Regulation

Which of the following is a density-independent factor?

This figures illustrates that territory size is positively correlated with

The presence of a uniform distribution among plants is often used as an indication that ________ is occurring.

________ competition occurs when some competing individuals obtain enough resources for themselves while denying resources to others.

High-density conditions caused no noticeable change in the behavior of experimental wood frog (Rana sylvatica)tadpoles.

Which of the following is negatively correlated with territory size?

In logistic growth,the point at which population growth ceases is referred to as the

Dispersal is not a population regulatory mechanism.

Factors that influence population growth but do not change systematically with the density of the population are called density-________ factors.

A plant grown at high density will produce ________ seeds than the same plant grown at low density.

Scramble competition results in some individuals in the population getting more resources than others.

Which of the following is equal to (1 - N/K)?

When extreme contest competition occurs within a population,

The influence of density-independent factors on populations is generally less predictable than the influence of density-dependent factors.

In a wolf pack,the beta male

Plants can capture and defend space.

As population density increases in harp seals (Phoca groenlandica),females

The rate of aggressive interactions among individuals increases as population density increases.

Under the logistic growth model,the rate of population growth is highest when

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

Species Interactions, population Dynamics, and Natural Selection

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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