12. Prior to the 1650s, the wood bison population in North America remained close to the carrying capacity of its habitat. The generalized growth curve and the reproductive strategy of the wood bison were, respectively, A. a J-curve and r selection B. a J-curve and K selection C. an S-curve and r selection D. an S-curve and K selection
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Population Ecology: Evenly spaced, clustered around resources. Growth rate factor affected by population size. Population size has no influence. All choices may not be used and some may be used more than once. Species distributions, populations, survivorship curves, maximal sustainable population size. Low initial, equal. Place the letter in the appropriate blank. Long maturation time, density independent growth factor. Type II survival curve, short lifespan, extensive parental care, uniform distribution, many offspring at once. Type III survival curve, short maturation time, clumped distribution, carrying capacity. Type I survival curve, density dependent growth factor, large offspring. High initial, r-selected vs. k-selected. For #9-11 and #12-14, it does not matter the order in which you have your answers, as long as it is one of the three correct choices in the respective bubble.
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8. A Type I survivorship curve is level at first, with a rapid increase in mortality in old age. This type of curve is: a. typical of many marine invertebrates that produce large numbers of offspring b. typical of humans and other large mammals c. found most often in r-selected populations d. almost never found in nature 12. The term (K-N)/K in the logistic growth equation dN/dt = rN((K-N)/K): a. is the carrying capacity for a population b. is greatest when K is very large c. is zero when population size equals carrying capacity d. increases in value as N approaches K e. accounts for the overshoot of carrying capacity 16. With limited staff and money, conservationists often need to prioritize their efforts. Of the following choices, which should receive the greatest conservation attention in order to preserve biodiversity? a. the apex predator b. declining keystone species in a community c. a commercially important species d. endangered and threatened vertebrate species e. all declining species
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The life history strategy in which each individual has only a few offspring and lots of parental care is: keystone species K-selection redundancy succession r-selection QUESTION 9 Imagine a strain of bacteria that is capable of cell division every 20 minutes. If you provide ample food and space and plot the number of bacteria in the culture for 4 hours, the resulting population growth curve will most closely resemble the _________ model of population growth. exponential logistic Type III Type I Type II
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