#Question id: 10655
#Section 1: Ecology
Which of the following statements about the evolution of life histories is correct?
A) Unstable environments with unlimited resources favor r-selected populations.
B) K-selected populations are most often found in environments where density-independent factors are important regulators of population size.
C) Most populations have both r- and K-selected characteristics that vary under different environmental conditions.
D) The reproductive efforts of r-selected populations are directed at producing just a few offspring with good competitive abilities.
#Question id: 10658
#Section 1: Ecology
The accompanying figure shows population growth pattern for two species in the same habitat
Which of the following conclusions hold true?
#Question id: 10660
#Section 1: Ecology
Given below are growth equations where dN/dt is defined as
A. rN
B. rN[(K-N)/N]
With reference to the above equations, which one of the following statements is incorrect?
#Question id: 10661
#Section 1: Ecology
Semelparous species are those that produce all of their offspring in a single reproductive event. The survivorship curve of a population of a semelparous species would most likely resemble which of the following?
#Question id: 10664
#Section 1: Ecology
dN/dt = rN (K-N/K ) The logistic equation above is used to describe the rate of change of a population, N, with time, t, Where r is the intrinsic rate of increase and K is the carrying capacity. What is value of per capita growth rate when population size is 200 individuals? ( K= 400, r =.25)
#Question id: 10666
#Section 1: Ecology
In a experimental invertebrate population the birth rate is 1200 per 1000 and death rate is 300 per 1000 per generation. Initial population size is 10000. What is value of NET reproductive rate?