The graph above shows the population growth curves of Paramecium aurelia and Paramecium caudatum cultures after they were mixed together. One inference that could correctly be drawn from the graph is that P. aurelia and P. caudatum cannot successfully

Answer 1

coexist in the same culture for long periods of time. This is supported by the fact that the population of P. caudatum rapidly declines while the population of P. aurelia continues to increase. This suggests that P. aurelia may outcompete P. caudatum for resources or produce some sort of inhibitory factor that negatively affects the growth of P. caudatum.