Most density-dependent factors show negative feedback relative to population size. Which one of the following is more likely to show positive feedback relative to population size?

Most density-dependent factors show negative feedback relative to population size. Which one of the following is more likely to show positive feedback...

Select the description of a population pyramid for a population that has the largest potential for exponential growth.

Select the description of a population pyramid for a population that has the largest potential for exponential growth.  A. broad at the base,...

What is the most reasonable conclusion that can be made from data graphed in the figure.

What is the most reasonable conclusion that can be made from data graphed in the figure. A. After high mortality early in life, survivorship becomes...

What is the most reasonable conclusion that can be made from data graphed in the figure.

What is the most reasonable conclusion that can be made from data graphed in the figure. A. Adults that are likely to die soon have more offspring...

A species whose population growth is not well described by the logistic growth equation is likely to have all of the following traits except

A species whose population growth is not well described by the logistic growth equation is likely to have all of the following traits except  A....

Some population parameters vary directly (as one increases, the second increases) and some vary inversely (as one increases, the second decreases) with population density. Which one of the following would be expected to vary inversely with population density?

Some population parameters vary directly (as one increases, the second increases) and some vary inversely (as one increases, the second decreases) with...

At what point in a population will zero population growth occur?

At what point in a population will zero population growth occur?  A. when N equals K B. when N is less than K C. when dN/dt equals zero D. when...

Parental care of the young is usually associated with species with a Type ___ survivorship curve.

Parental care of the young is usually associated with species with a Type ___ survivorship curve.  A. I B. II C. III D. I or II (depending on...

Which one of the following factors that affects population growth is not a direct part of the logistic growth equation?

Which one of the following factors that affects population growth is not a direct part of the logistic growth equation?  A. intraspecific competition B....

Which one of the following is not a correct distinction about source-sink metapopulations?

Which one of the following is not a correct distinction about source-sink metapopulations?  A. Source populations usually occupy better habitats. B....

Allen's rule states that mammals from colder climates have shorter ears and appendages than individuals of the same species from warmer areas. The related Bergman's rule states that mammal body size varies with latitude, with larger body size in populations located closer to the poles and smaller body size in populations located closer to the equator. Both Allen's and Bergman's rule has to do with the fact that

Allen's rule states that mammals from colder climates have shorter ears and appendages than individuals of the same species from warmer areas. The related...

Select the feature that is not an important characteristic of a population.

Select the feature that is not an important characteristic of a population.  A. a population's geographic distribution B. dispersion of individuals...

You construct a life table for a plant species and find that in all cases about the same proportion of the cohort survive to the beginning of the next time interval. Such a plant would have

You construct a life table for a plant species and find that in all cases about the same proportion of the cohort survive to the beginning of the next...

Which one of the following is not a physical environmental factor that determines where an organism can live?

Which one of the following is not a physical environmental factor that determines where an organism can live?  A. temperature B. water C. insolation...

Spacing within a population for a species that is strongly territorial would be expected to be

Spacing within a population for a species that is strongly territorial would be expected to be  A. uniform. B. clumped. C. random. D. uniform...

Population pyramids are primarily used to show

Population pyramids are primarily used to show  A. death rates. B. birth rates. C. competition. D. sex and age composition of a population. E....

All of the following apply to the demography of human populations today except

All of the following apply to the demography of human populations today except  A. we use almost half of the Earth's land. B. we use over half...

The human population growth rate has declined over the past 30 years. This means

The human population growth rate has declined over the past 30 years. This means  A. improved status of women and increased family planning have...

The Allee effect occurs when

The Allee effect occurs when  A. a density-dependent factor decreases a population. B. a density-independent factor decreases a population. C....

A __________ would probably have a Type III life history.

A __________ would probably have a Type III life history.  A. whale B. coconut palm C. lion D. gorilla E. pine tree Answer:...

Which of the following factors is not one that increases the likelihood of population extinction?

Which of the following factors is not one that increases the likelihood of population extinction?  A. Small population size is a factor contributing...

Many times species are composed of networks of distinct populations called metapopulations. Metapopulations occur in areas where

Many times species are composed of networks of distinct populations called metapopulations. Metapopulations occur in areas where  A. a population...

An example of clumped distribution of a population is

An example of clumped distribution of a population is  A. an introduction of a new species into a new environment. B. a herd of antelope. C....

Populations have three basic types of dispersal patterns—clumped, random, and uniform. One can observe random distributions because

Populations have three basic types of dispersal patterns—clumped, random, and uniform. One can observe random distributions because  A. individuals...

In the logistic growth model, as the number of individuals in the population (N) approaches the carrying capacity (K), the intrinsic rate of growth (r)

In the logistic growth model, as the number of individuals in the population (N) approaches the carrying capacity (K), the intrinsic rate of growth...

There are three aspects of entire populations that are important and often studied. Select the best choice from the ones listed.

There are three aspects of entire populations that are important and often studied. Select the best choice from the ones listed.  A. a population's...

In the logistic growth model, as the number of individuals in the population (N) approaches the carrying capacity (K), the rate of growth (dN/dt)

In the logistic growth model, as the number of individuals in the population (N) approaches the carrying capacity (K), the rate of growth (dN/dt)  A....

Examples of organisms showing K-selected adaptations include all of the following except

Examples of organisms showing K-selected adaptations include all of the following except  A. dandelions. B. whooping cranes. C. whales. D. humans. E....

Which of the following is not an example of organisms displaying r-selected adaptations?

Which of the following is not an example of organisms displaying r-selected adaptations?  A. dandelions B. whales C. aphids D. mice E. cockroaches Answer:...

The r-selected populations are characterized by all of the following except

The r-selected populations are characterized by all of the following except  A. early age of first reproduction. B. large brood size/numerous...

Populations of organisms that have sigmoid growth curves limited by the carrying capacity are called

Populations of organisms that have sigmoid growth curves limited by the carrying capacity are called  A. K-selected. B. r-selected. C. predators. D....

Density-independent factors do not include

Density-independent factors do not include  A. weather. B. earthquakes. C. intraspecific competition. D. volcanism. E. introduction of non-native...

Ranges of a population

Ranges of a population  A. are very fluid and change frequently in a random fashion. B. are stable and almost never change. C. only change after...

The number of individuals of a species that can be supported indefinitely in a particular place is called its

The number of individuals of a species that can be supported indefinitely in a particular place is called its  A. niche. B. biotic potential. C....

Clumped or patched populations that undergo local periodic extinction and recolonization are called

Clumped or patched populations that undergo local periodic extinction and recolonization are called  A. randomly spaced populations. B. uniformly...

Demographic studies include all of the following except

Demographic studies include all of the following except  A. age structure. B. growth rates. C. mortality and survivorship curves. D. sex ratio. E....

Population studies include all of the following features except

Population studies include all of the following features except  A. size. B. biodiversity. C. density. D. dispersion. E. demography. Answer:...

A community and the nonliving factors with which it interacts is called a(n)

A community and the nonliving factors with which it interacts is called a(n)  A. population. B. race. C. cline. D. environment. E. ecosystem. Answer:...

A small group of mice are released on an island without mice but with abundant food for mice and no predators. After the population size stabilizes for several years, a hurricane drastically reduces it, we can now say that

A small group of mice are released on an island without mice but with abundant food for mice and no predators. After the population size stabilizes...

A small group of mice are released on an island without mice but with abundant food for mice and no predators. When the population stabilizes

A small group of mice are released on an island without mice but with abundant food for mice and no predators. When the population stabilizes  A....

A small group of mice are released on an island without mice but with abundant food for mice and no predators. Initially, the growth of the mouse population will be limited mainly by

A small group of mice are released on an island without mice but with abundant food for mice and no predators. Initially, the growth of the mouse population...

The trade-off between investments in current reproduction and in growth that promotes future reproduction is referred to as the total cost of

The trade-off between investments in current reproduction and in growth that promotes future reproduction is referred to as the total cost of  A....

Effects that are dependent on the size of the population and regulate the growth of populations are called ___________ effects.

Effects that are dependent on the size of the population and regulate the growth of populations are called ___________ effects.  A. K-related B....

Organisms that produce offspring several times over many seasons exhibit a life history adaptation called

Organisms that produce offspring several times over many seasons exhibit a life history adaptation called  A. semelparity. B. iteroparity. C....

Organisms such as lizards that need to maintain body temperature through external means do so by

Organisms such as lizards that need to maintain body temperature through external means do so by  A. shivering to produce heat. B. sunbathing. C....

A group of individuals of a single species living together is a

A group of individuals of a single species living together is a  A. deme. B. phenotype. C. genome. D. biotic community. E. population. Answer:...

A group of population members all of the same age is called a _________.

A group of population members all of the same age is called a _________.  A. deme B. species C. cohort D. tribe Answer:...

The statistical study of populations including sex ratio, age structure, and predicting growth rates is called __________.

The statistical study of populations including sex ratio, age structure, and predicting growth rates is called __________.  A. ethology B. demography C....

Species that have a delayed reproductive stage, are competing for limited resources, and have smaller numbers of slowly maturing large offspring show ______ selected adaptations.

Species that have a delayed reproductive stage, are competing for limited resources, and have smaller numbers of slowly maturing large offspring show...

Life history adaptations of ____ selected populations are characterized by an early age of first reproduction and short maturation time and life span.

Life history adaptations of ____ selected populations are characterized by an early age of first reproduction and short maturation time and life span.  A....

The size at which a population stabilizes in a particular place is defined as the __________ for that species.

The size at which a population stabilizes in a particular place is defined as the __________ for that species.  A. growth potential B. optimum C....

The rate at which a population of a given species will increase when no limits are placed on its rate of growth is called its __________.

The rate at which a population of a given species will increase when no limits are placed on its rate of growth is called its __________.  A....

Based on surface-area to volume considerations, we would predict that populations of mammals that live in colder climates should have _______ bodies than populations of the same species in warm climates.

Based on surface-area to volume considerations, we would predict that populations of mammals that live in colder climates should have _______ bodies...

Populations of endotherms that live in colder climates tend to have shorter ears and limbs than populations of the same species in warm climates. This is called ____________ Rule.

Populations of endotherms that live in colder climates tend to have shorter ears and limbs than populations of the same species in warm climates. This...