Question

Population Growth Equation In the population growth equation, the letter “r” is defined as the per...

Population Growth Equation

  1. In the population growth equation, the letter “r” is defined as the per capita rate of increase, which is the difference between the per capita birth rate (the number of offspring produced per unit of time by an average member of the population) and per capita death rate (average number of deaths in the population per unit time).

What does the value of “r” indicate about a population?

  1. All of the following characteristics are typical of a K-selected population except:
  1. parental care of offspring
  2. iteroparous reproduction
  3. logistic population growth curve
  4. exponential population growth curve
  1. All of the following are correct statements about the regulation of populations except:
  1. the logistic equation reflects the effect of density-dependent factors, which can ultimately stabilize populations around the carrying capacity.
  2. high densities in a population may cause physiological changes that inhibit

reproduction.

  1. density-independent factors have a greater effect as a population’s density increases.
  2. the effect of drought on population size does not increase as a population’s density increases.
  1. Uniform spacing patterns in plants are often associated with which of the following?
  1. antagonistic interactions among individuals in the population
  2. chance
  3. the random distribution of seeds
  4. a patchy distribution of resources within the population's range
  1. All of the following characteristics are typical of an r-selected population except:
  1. high mortality rates of young
  2. much parental care of offspring
  3. small offspring
  4. many offspring per reproductive episode

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