問題一覧
1
Type II survivorship curve indicates
E.equal chance of dying at any age
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2.Type I survivorship curve indicates
A . low juvenile mortality and high mortality in older adults.
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3.Type III survivorship curve indicates
B . high juvenile mortality and low mortality in older adults
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4.Humans would best be represented by which of the following survivorships curves?
C . I
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5.The age distribution of a population can reveal
E . growth potential, survivorship, and reproduction
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6.Which of the following are mismatched?
A . nx : mortality rate
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7.The "net reproduction rate" equals
C . ∑ lx mx
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8.Which of the following statements regarding "generation time" is false?
D . It can be used to calculate the geometric growth rate
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9.The "generation time" of a population equals
A . (∑ x lxmx)/ R0
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10.Which of the following cannot be determined using a fecundity schedule combined with a lifetable?
D . Dispersal rates
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11.Which of the following equations best represents the geometric rate of increase?
D . λ = ( Nt+1)/ Nt
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12.Korpimaki and Norrdahl's research on voles (prey) and kestrels and owls (predators)suggest that the predator's population dynamics are
E . both a numerical response and in response to vole densities
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13.The Africanized honeybee stopped spreading southward through South America by about 1983 in response to
A . unfavorable climatic factors
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14.A group of subpopulations living in spatially isolated patches connected by exchange of individuals among patches is called a(n)
E . metapopulation
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15.Which of the following indicates a population in decline?
B . R0 = 0.601
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16.Calculate the generation time given the following population data: R0 = 0.601, r = −0.05, ∑ xlx mx = 6.4, mx= 0.96
E . 10.6
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17.A cohort is
D . A group of same aged young which grow and survive at similar rates
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18.Survivorship of which ofthe following organisms is likely to be analyzed with a static life table?
C . Elephant
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19.A population increases in size if R0
D . >1
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20.If Ro=1 then we say population size is
B . At equilibrium