The figure shows the change in population size of Paramecium from Gause's experiment, raised in either high-food or low-food conditions. Based on this figure, how was the logistic growth model for Paramecium changed by adding food?

Question

Quizplus · Accepted Answer

The logistic growth model includes the carrying capacity (K) as a factor in determining population growth. The population of Paramecium raised in high-food conditions reached a higher maximum population size, indicating that K increased with the addition of food. The growth rate (r) was not affected by the addition of food, as both the high- and low-food populations grew at similar rates initially before the low-food population experienced a crash.

The Figure Shows the Change in Population Size of Paramecium