Multiple Choice Quiz


1	Murie’s life table data for Dall sheep indicate:
		A)	surviving the first year is their biggest challenge
		B)	wolves cause most mortality in older cohorts
		C)	sheep can live to 15 years in the wild
		D)	immature males account for most deaths up to age 2


2	A steep dip in a survivorship curve indicates:
		A)	increased mortality
		B)	decreased survivorship
		C)	fewer cohorts moving on to the next age class
		D)	all of the above
		E)	none of the above


3	A Type II curve:
		A)	has elements of randomness associated with it
		B)	shows the cummulative, negative effect of getting old
		C)	reveals the cause of mortality, if enough data points are plotted
		D)	is theoretically interesting, but has not been observed in nature


4	Rates of post-glacial tree dispersal in North America are approximately:
		A)	10-40 m/yr
		B)	100-400 m/yr
		C)	1-4 km/yr
		D)	10-40 km/yr
		E)	100-400 km/yr


5	Snails:
		A)	spate
		B)	vole
		C)	migrate
		D)	digress


6	Variable organismal response is:
		A)	ultimately environmental
		B)	genetic, environmental, and interactive
		C)	ultimately genetic
		D)	unaccounted for by natural selection


7	Partioning the variance in organismal response is akin to:
		A)	mark-recapture studies
		B)	life table analysis
		C)	sigmoidal population growth
		D)	clumped dispersion


8	True or False: Empty age classes provide useful information to ecologists.
		A)	True
		B)	False


9	True or False: Different populations of the same species can have different survivorship curves.
		A)	True
		B)	False


10	True or False: The net reproductive rate per individual is simply the sum of l_x and m_x.
		A)	True
		B)	False


11	True or False: A net reproductive rate greater than zero indicates a population is growing.
		A)	True
		B)	False


12	True or False: Generation time is inversely proportional to body size.
		A)	True
		B)	False


13	True or False: The per capita rate of increase is the difference between birthrates and death rates in a population and can be negative.
		A)	True
		B)	False

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