NEETZoologyOrganisms and Populations
Read the following statements regarding the Verhulst-Pearl logistic growth model: I. It initially shows a lag phase, followed by phases of acceleration and deceleration. II. The plot of population density (N) in relation to time (t) yields a sigmoid curve. III. The mathematical expression for this growth is dN dt = rN ( N-K N ) . IV. This growth model assumes that resources in the habitat are unlimited. How many of t
Options
- ATwo
- BThree
- CFour
- DOne
Correct answer
A. Two
Step-by-step solution
Statement I is correct as logistic growth begins with a lag phase, followed by phases of acceleration and deceleration. Statement II is correct because the population density plotted against time yields a sigmoid (S-shaped) curve. Statement III is incorrect because the correct mathematical expression is dN dt = rN ( K-N K ) . Statement IV is incorrect because the logistic growth model is based on the realistic assumption that resources are finite and become limiting, whereas the exponential model assumes unlimited