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NEET
Exam
NEET
Subject
Zoology
Chapter
Organisms and Populations

NEET · Zoology · Organisms and Populations

What type of population growth is described by the logistic growth...

What type of population growth is described by the logistic growth model?

Options

  1. AExponential growth
  2. BArithmetic growth
  3. CLogistic growth
  4. DGeometric growth

Correct answer

C. Logistic growth

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 = Carrying capacitySince resources for growth for most animal populations are finite and become limiting sooner or later, the logistic growth model is considered a more realistic one.
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