Target Exam

CUET

Subject

Biology

Chapter

Organisms and Populations

Question:

When resources are unlimited in a habitat, what type of growth is seen in the population?

Options:

Exponential growth

Logistic growth

Stable growth

Lagging growth

Correct Answer:

Exponential growth

Explanation:

The correct answer is Option (1) → Exponential growth

Exponential growth : Exponential growth is a population growth model that describes unregulated, rapid growth where the population size increases continuously without any constraints. The shape of the exponential growth curve is J-shaped, as the population size rapidly increases over time .Resource (food and space) availability is  essential for the unimpeded growth of a population. Ideally, when resources in the habitat are unlimited, each species has the ability to realize fully its innate potential to grow in number.

Logistic growth : Logistic growth is a population growth model that describes a population initially growing exponentially but eventually reaching a carrying capacity and stabilizing.The carrying capacity represents the maximum population size that the environment can sustain with its available resources. The shape of the logistic growth curve is sigmoid, which means it starts with slow growth, accelerates, and then levels off as the population approaches the carrying capacity of the environment. The Verhulst-Pearl logistic growth model is another term for logistic growth.

 

Population growth curve a when responses are not limiting the growth, plot is exponential, b when responses are limiting the growth, plot is logistic, K is carrying capacity