NEETZoologyOrganisms and Populations
Why is the logistic growth model considered more realistic for most animal populations?
Options
- ABecause resources are infinite
- BBecause resources are finite and become limiting
- CBecause it assumes no competition
- DBecause it ignores birth and death rates
Correct answer
B. Because resources are finite and become limiting
Step-by-step solution
A population growing in a habitat with limited resources shows initially a lag phase, followed by phases of acceleration and deceleration and finally an asymptote, when the population density reaches the carrying capacity. A plot of N in relation to time (t) results in a sigmoid curve. This type of population growth is called Verhulst-Pearl Logistic Growth (Figure 11.3) and is described by the following equation:dN/dt = rN(1-N/K)Where N = Population density at time tr = Intrinsic rate of natural increaseK = Carryin