NEETZoologyOrganisms and Populations
What shape does the population growth curve take when plotting N in relation to time under logistic growth?
Options
- AJ-shaped
- BS-shaped (sigmoid)
- CU-shaped
- DLinear
Correct answer
B. S-shaped (sigmoid)
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 = Carryi