Question

Which of the following pairs represents a density independent growth model and its respective growth curve?

• A. Logarithmic growth model, S-shaped growth curve
• B. Exponential growth model, J-shaped growth curve
• C. Logistic growth model, J-shaped growth curve
• D. Exponential growth model, S-shaped growth curve

Answer 1

The correct option is D Exponential growth model, S-shaped growth curve

Populations with unlimited resources will show an exponential growth. It is called the exponential growth model and can be represented by a J-shaped curve. This is a density independent growth because population growth does not depend on the density of individuals in the habitat and is not limited by it. This is an unrealistic growth model. Graphically, it can be represented by a J-shaped curve. Hence option c is correct.

A logarithmic growth model is followed by populations having limited resources. Due to limited resources, the growth of the population reaches a stationary phase when the population density becomes equal to the carrying capacity i.e maximum number of individuals that can be sustained by a habitat. Thus, this model is a density dependent growth model. This is a more realisitic growth model. It can be graphically represented by an S-shaped curve.