1521215
Descripción
Test por Laurel McLaughlin, actualizado hace más de 1 año
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Creado por Laurel McLaughlin
hace más de 9 años
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Pregunta 1
Pregunta
In exponential population growth, r increases as population size increases.
Respuesta
- True
- False
Pregunta 2
Pregunta
Population growth rates are usually close to r(max).
Respuesta
- True
- False
Pregunta 3
Pregunta
If r=0.2 for a population, population size is:
Respuesta
-
decreasing
-
neither; r does not indicate population growth
-
increasing
-
stable
Pregunta 4
Pregunta
Carrying capacity, or K, is:
Respuesta
-
variable in time and space
-
an indicator of fecundity
-
fixed for each population
-
a feature of exponential population growth
Pregunta 5
Pregunta
Logistic population growth is density-dependent.
Respuesta
- True
- False
Pregunta 6
Pregunta
Population growth rate can be defined as:
Respuesta
-
change in number of individuals per unit time
-
the maximum number of individuals a habitat can support
-
birth rate x death rate
-
mass gained by individuals per unit time
Pregunta 7
Pregunta
A hurricane wipes out most of a population of palm trees. This type to limiter of population growth is:
Respuesta
-
density-dependent
-
density-independent
-
negative exponential
-
logistic
Pregunta 8
Respuesta
-
linear
-
logistic
-
exponential
-
parabolic
Pregunta 9
Pregunta
Exponential population growth is density-independent.
Respuesta
- True
- False
Pregunta 10
Pregunta
In what type of species would r(max) be highest?
Respuesta
-
young age-at-maturity, few offspring
-
young age-at-maturity, many offspring
-
old age-at-maturity, many offspring
-
old age-at-maturity, few offspring
Pregunta 11
Respuesta
-
predation by lynx
-
food availability
-
space
-
both a and b
-
none of the above
Pregunta 12
Pregunta
Which of the following statements about metapopulations is FALSE?
Respuesta
-
a metapopulation is a population of populations
-
populations that have gone extinct can be restored
-
overall population size (summing all patches) is constant
-
there are 'core' populations that never go extinct
Pregunta 13
Pregunta
In a metapopulation, there is a balance between extinction and (re)colonization.
Respuesta
- True
- False
Pregunta 14
Pregunta
Many of the hypotheses that have been developed to explain population cycles (including in hares) involve:
Respuesta
-
density-dependent factors
-
density-independent factors
-
carrying capacity
-
age-specific factors
Pregunta 15
Pregunta
Projections for human population growth depend primarily on what factor?
Respuesta
-
infant mortality rates
-
overall survivorship
-
fertility rates in women
-
disease eradication
Pregunta 16
Pregunta
Which of the following is TRUE about the current status of the human population?
Respuesta
-
the population is increasing, but r is decreasing
-
the population is increasing; r=0.5
-
the population is increasing, and r is increasing
-
the population is stable; r (population growth rate) = 0
Pregunta 17
Pregunta
You are a human demographer, and you see an age pyramid that looks like the figure below. What would you say about this population?
Image:
pop_pyramid (image/jpg)
Respuesta
-
the population is growing rapidly
-
none of the above
-
the population is dominated by people past reproductive age
-
the population has reached carrying capacity
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