TLS Online TPP Program

#Question id: 12341


The figure shows population growth trajectories over time (as indicated by the arrows) of two stored-grain beetle  species  when  grown  together  under  constant  conditions.  Three  experiments  were  performed  that  differed only in the initial densities of the two species. Which of the following is the best interpretation of the experimental results?


#Unit 10. Ecological Principles
  1. Population growth is random (unpredictable) for each species. 
  2. No equilibrium exists in which both species can coexist.
  3. Interspecific competition is stronger than intraspecific competition.
  4. Density dependence within each species is stronger than interspecific competition.