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Life, 4/e

Ricki Lewis, University of New York at Albany
Mariëlle Hoefnagels, University of Oklahoma
Douglas Gaffin, University of Oklahoma
Bruce Parker, Utah Valley State College

Populations

Chapter Quiz


1	______________ is the study of the interactions between organisms and their environment.
		A)	Ethology
		B)	Environmental Science
		C)	Ecology
		D)	Biology


2	_______________ features of the environment determine the abundance and distribution of living things.
		A)	Abiotic
		B)	Biotic
		C)	Abiotic and biotic
		D)	Weather


3	A ________________ survivorship curve shows a constant rate of survivorship throughout life.
		A)	type I
		B)	type II
		C)	type III


4	True or false. A species is often distributed continuously and in the same density over its entire range.
		A)	True
		B)	False


5	___________ is the pattern of individuals of a population scattered throughout habitat space.
		A)	Population density
		B)	Population dispersion
		C)	Age structure
		D)	Sex ratio


6	Which of these equations would give the growth rate of a population?
		A)	total number of individuals / deaths - births
		B)	total number of individuals / births - deaths
		C)	births – deaths / total number of individuals
		D)	deaths – births / total number of individuals


7	When calculating population growth rate, the symbol r refers to ________________.
		A)	intrinsic rate of natural increase
		B)	birth rate
		C)	death rate
		D)	population size


8	True or false. The exponential growth potential for most species is seldom attained.
		A)	True
		B)	False


9	The number of offspring an individual produces over its lifetime is _______________.
		A)	carrying capacity
		B)	survivorship
		C)	reproductive rate
		D)	fecundity


10	The theoretical maximum population size that can be supported indefinitely in a given habitat is the _____________.
		A)	carrying capacity
		B)	biotic potential
		C)	fundamental niche
		D)	realized niche


11	Which factor could not be considered a factor of environmental resistance?
		A)	disease
		B)	predation
		C)	increased food supply
		D)	parasitism


12	True or false. Environmental resistance causes populations to grow at a maximum rate.
		A)	True
		B)	False


13	Choose the density-dependent factor that will slow population growth as population size increases.
		A)	fire
		B)	food availability
		C)	colder-than-normal winters
		D)	volcanic activity


14	The equation to describe the S-shaped growth curve that illustrates logistic growth is ___________.
		A)	growth = rN
		B)	growth = K-N/K
		C)	growth = rN (K-N)/K
		D)	None of these is correct.


15	True or false. Density-dependent factors regulate K-selected populations close to the carrying capacity.
		A)	True
		B)	False


16	An r-selected species would have what attribute?
		A)	population size under carrying capacity
		B)	small, short-lived
		C)	many offspring, no parental care
		D)	All of these are correct.


17	True or false. The interactions of predator and prey species influence only the population size of the prey species.
		A)	True
		B)	False


18	______________ is one country that encourages population growth.
		A)	India
		B)	China
		C)	Canada
		D)	Brazil


19	What is the approximate current growth rate of the human population?
		A)	9 billion per year
		B)	10 million per year
		C)	78 million per year
		D)	500,000 per year

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