Mastering Biology Chapter 19

Logistic growth involves A). Population growth slowing down as the population approaches carrying capacity. B). Population growth continuing forever. C). A population crash. D). Population size decreasing to zero. E). Population growth reaching carrying capacity and then speeding up.

A). Population growth slowing down as the population approaches carrying capacity.

Human population growth __________. A). is currently exponential B). has reached carrying capacity C). will not be stopped by environmental resistance D). is currently experiencing the Allee effect E). has an S-shaped curve

A). is currently exponential

A population of mice has grown so rapidly that there are 2,400 individuals in an ecosystem that will support about 1,800 mice. The mouse population is most likely to __________. A). undergo a dramatic decline in size, possibly to a stable level at or below 1,800 individuals B). continue to increase C). undergo niche separation to accommodate the extra mice D). continue to have a birth rate that equals the death rate E). have no effect on the population size of predators that feed on mice

A). undergo a dramatic decline in size, possibly to a stable level at or below 1,800 individuals

The single greatest current cause of population decline is __________. A). reduced genetic variability B). habitat destruction C). greenhouse warming D). overhunting E). the introduction of exotic species

B). habitat destruction

A set of traits that affects an organism's schedule of reproduction and survival is called its _____. A). limiting factors B). life history C). survivorship D). age structure E). evolutionary adaptations

B). life history

The maximum population a habitat can support is its A). Exponential growth. B). Death rate. C). Carrying capacity. D). Logistic growth. E). Birth rate.

C). Carrying capacity

An ideal habitat with unlimited resources is associated with A). Logistic growth. B). Neither exponential growth nor logistic growth. C). Exponential growth. D). Both exponential growth and logistic growth. E). Population crashes.

C). Exponential growth

Chimpanzees have a relatively low birth rate. They take good care of their young, and most chimps live a long life. The chimp survivorship curve would look like __________. A). a line that drops steeply at first, then flattens out B). a line that slopes gradually downward C). a relatively flat line that drops steeply at the end D). a horizontal line E). a line that slopes gradually upward

C). a relatively flat line that drops steeply at the end

Which one of the following would most likely be an example of an abiotic factor that limits population growth? A). accumulation of toxic wastes B). food availability C). daily temperature extremes D). diseases E). parasites

C). daily temperature extremes

In exponential growth A). Population size grows more and more slowly as the population gets bigger. B). Population size stays constant. C). Population growth slows as the population gets close to its carrying capacity. D). Population size grows faster and faster as the population gets bigger. E). None of these are correct.

D). Population size grows faster and faster as the population gets bigger.

A population is defined as __________. A). all the organisms that inhabit a particular area B). all the abiotic factors in addition to the community of species in a certain area C). a specific environment in which organisms live D). a group of individuals of a single species that occupies the same general area E). the sum of all the planet's ecosystems

D). a group of individuals of a single species that occupies the same general area

A population will always grow exponentially __________. A). if it shows logistic growth B). if it is a population with an equilibrial life history C). until it reaches carrying capacity D). if there are no limiting factors E). if it is limited only by density-dependent factors

D). if there are no limiting factors

A newly mated queen ant establishes a nest in an unoccupied patch of suitable habitat. Assuming that no disasters strike the nest, which type of equation is likely to best describe its population growth? A). exponential B). linear C). quadratic D). logistic E). circular

D). logistic

No population can grow indefinitely. The ultimate size of any population is limited by __________. A). its mortality B). its death rate C). reproductive isolation D). the carrying capacity of its environment E). its birth rate

D). the carrying capacity of its environment

An example of population density is __________. A). the total dry weight of trout in a lake B). the total number of sturgeon per cubic meter in San Francisco Bay and in Tomales Bay C). 100 organisms (barnacles, mussels, and sea stars) in a 25-square-meter tide pool D). the number of Paramecium caudatum in a 250-milliliter solution within a glass flask E). 255 dogfish sharks

D). the number of Paramecium caudatum in a 250-milliliter solution within a glass flask

When birth rate equals death rate, __________. A). a population goes through up and down cycles B). a population is in danger of extinction C). density-dependent limiting factors do not affect the population D). the size of a population remains constant E). a population grows rapidly

D). the size of a population remains constant

Which of the following would NOT cause population size to decrease? A). An exponentially growing population outgrowing its food supply and crashing B). Increased death rate C). Increase in the number of predators D). Poor weather, resulting in less food being available E). Increased birth rate

E). Increased birth rate

To figure out the human population density of your community, you would need to know the number of people living there and __________. A). the birth rate of the population B). the dispersion pattern of the population C). the carrying capacity D). whether population growth is logistic or exponential E). the size of the area in which they live

E). The size of the area in which they live

A non-native species that has spread far beyond the original point of introduction and causes environmental or economic damage is called a(n) _____. A). endangered species B). predator C). threatened species D). population E). invasive species

E). invasive species

Which of the following is a definition of the ecological footprint? A). the factors that allow an invasive species to rapidly take advantage of a favorable habitat B). the identification of those things that are likely to become endangered in the foreseeable future C). the use of biological, chemical, and cultural methods for sustainable control of agricultural pests D). the increase in the proportion of child-bearing women in the population E). the estimate of the amount of land required to provide the raw materials an individual or a population consumes

E). the estimate of the amount of land required to provide the raw materials an individual or a population consumes