Organisms and Populations

The graphs below depict the number of individuals of two organisms, named P and Q, when grown independently, and together. Based on these growth patterns, which one of the following statements is correct?

A population with $N=400$ in asymptote at $K=500$ individuals, $K$ being the carrying capacity. Assuming the intrinsic rate of natural increase $(r)$ to be 0.01 , what would be the population browth rate ( $\mathrm{dN} / \mathrm{dt}$ )?

Which of the following graphs correctly represents the relationship between population growth rate $(\mathrm{dN} / \mathrm{dt})$ and population size $(\mathrm{N})$, if the population shows logistic growth?