1521215
Descrição
Quiz por Laurel McLaughlin, atualizado more than 1 year ago
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Criado por Laurel McLaughlin
mais de 9 anos atrás
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Questão 1
Questão
In exponential population growth, r increases as population size increases.
Responda
- True
- False
Questão 2
Questão
Population growth rates are usually close to r(max).
Responda
- True
- False
Questão 3
Questão
If r=0.2 for a population, population size is:
Responda
-
decreasing
-
neither; r does not indicate population growth
-
increasing
-
stable
Questão 4
Questão
Carrying capacity, or K, is:
Responda
-
variable in time and space
-
an indicator of fecundity
-
fixed for each population
-
a feature of exponential population growth
Questão 5
Questão
Logistic population growth is density-dependent.
Responda
- True
- False
Questão 6
Questão
Population growth rate can be defined as:
Responda
-
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
Questão 7
Questão
A hurricane wipes out most of a population of palm trees. This type to limiter of population growth is:
Responda
-
density-dependent
-
density-independent
-
negative exponential
-
logistic
Questão 8
Responda
-
linear
-
logistic
-
exponential
-
parabolic
Questão 9
Questão
Exponential population growth is density-independent.
Responda
- True
- False
Questão 10
Questão
In what type of species would r(max) be highest?
Responda
-
young age-at-maturity, few offspring
-
young age-at-maturity, many offspring
-
old age-at-maturity, many offspring
-
old age-at-maturity, few offspring
Questão 11
Responda
-
predation by lynx
-
food availability
-
space
-
both a and b
-
none of the above
Questão 12
Questão
Which of the following statements about metapopulations is FALSE?
Responda
-
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
Questão 13
Questão
In a metapopulation, there is a balance between extinction and (re)colonization.
Responda
- True
- False
Questão 14
Questão
Many of the hypotheses that have been developed to explain population cycles (including in hares) involve:
Responda
-
density-dependent factors
-
density-independent factors
-
carrying capacity
-
age-specific factors
Questão 15
Questão
Projections for human population growth depend primarily on what factor?
Responda
-
infant mortality rates
-
overall survivorship
-
fertility rates in women
-
disease eradication
Questão 16
Questão
Which of the following is TRUE about the current status of the human population?
Responda
-
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
Questão 17
Questão
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)
Responda
-
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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