Biology 150 - Chapter 10 LEARN Quiz

Laurel McLaughlin
Quiz by , created about 5 years ago

Biology 150 (Organismal and Evolutionary Ecology), Chapter 10 (Population Ecology) LEARN Quiz

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Laurel McLaughlin
Created by Laurel McLaughlin about 5 years ago
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Question 1

Question
In exponential population growth, r increases as population size increases.
Answer
  • True
  • False

Question 2

Question
Population growth rates are usually close to r(max).
Answer
  • True
  • False

Question 3

Question
If r=0.2 for a population, population size is:
Answer
  • decreasing
  • neither; r does not indicate population growth
  • increasing
  • stable

Question 4

Question
Carrying capacity, or K, is:
Answer
  • variable in time and space
  • an indicator of fecundity
  • fixed for each population
  • a feature of exponential population growth

Question 5

Question
Logistic population growth is density-dependent.
Answer
  • True
  • False

Question 6

Question
Population growth rate can be defined as:
Answer
  • 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

Question 7

Question
A hurricane wipes out most of a population of palm trees. This type to limiter of population growth is:
Answer
  • density-dependent
  • density-independent
  • negative exponential
  • logistic

Question 8

Question
What kind of population growth curve is this?
Answer
  • linear
  • logistic
  • exponential
  • parabolic

Question 9

Question
Exponential population growth is density-independent.
Answer
  • True
  • False

Question 10

Question
In what type of species would r(max) be highest?
Answer
  • young age-at-maturity, few offspring
  • young age-at-maturity, many offspring
  • old age-at-maturity, many offspring
  • old age-at-maturity, few offspring

Question 11

Question
What limits growth of hare populations?
Answer
  • predation by lynx
  • food availability
  • space
  • both a and b
  • none of the above

Question 12

Question
Which of the following statements about metapopulations is FALSE?
Answer
  • 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

Question 13

Question
In a metapopulation, there is a balance between extinction and (re)colonization.
Answer
  • True
  • False

Question 14

Question
Many of the hypotheses that have been developed to explain population cycles (including in hares) involve:
Answer
  • density-dependent factors
  • density-independent factors
  • carrying capacity
  • age-specific factors

Question 15

Question
Projections for human population growth depend primarily on what factor?
Answer
  • infant mortality rates
  • overall survivorship
  • fertility rates in women
  • disease eradication

Question 16

Question
Which of the following is TRUE about the current status of the human population?
Answer
  • 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

Question 17

Question
You are a human demographer, and you see an age pyramid that looks like the figure below. What would you say about this population?
Answer
  • the population is growing rapidly
  • none of the above
  • the population is dominated by people past reproductive age
  • the population has reached carrying capacity