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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

  1. ATwo
  2. BThree
  3. CFour
  4. 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

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