Organisms And Populations

Logistic growth in a population is defined by a specific pattern where the growth rate initially increases, reaches a peak, and then subsequently decreases as the population size nears the environment's carrying capacity. In a logistic growth model, the relationship between the population growth rate ( ) and the population size ( ) forms a curve:At low population sizes, resources are abundant, leading to an increase in the growth rate as the population expands.As the population size grows, competition for limited resources begins to slow the rate of population increase.The growth rate reaches its highest point at an intermediate population size.As the population approaches its carrying capacity, the growth rate declines, eventually reaching zero when the carrying capacity is met, indicating that the population is no longer growing.The curve that represents logistic growth is typically sigmoidal, reflecting these stages of growth.

To find the logistic‐growth rate, we use the formula$ r=0.01 N=400 K=500 $Answer:0.8(Option C).