[Campbell Biology P.1239] A population of insects is introduced into a new, resource-rich env... | Practice Question

A population of insects is introduced into a new, resource-rich environment. Initially, their numbers grow very rapidly. However, as the population increases, competition for resources intensifies, and the growth rate slows down until the population size stabilizes around a certain maximum. Which sequence of ecological models best describes this population's growth over time, as explained in the 'Key Concepts' section?

  • A: Logistic model, then exponential model.
  • B: Exponential model, then logistic model.
  • C: Density-dependent growth, then density-independent growth.
  • D: Human population growth, then stable size.

Explanation

The scenario describes initial rapid growth in an ideal environment, characteristic of the exponential model Key Concept 53.2 . As resources become limited and competition increases, the growth rate slows, leading to the population stabilizing around its carrying capacity, which is characteristic of the logistic model Key Concept 53.3 .