NEETZoologyOrganisms and Populations
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The Verhulst-Pearl logistic growth model is considered a more realistic model of population growth than the exponential model. Reason (R): The logistic growth model assumes that resources in a habitat are unlimited and population growth continues indefinitely. In the light of the above statements,
Options
- ABoth (A) and (R) are correct and (R) is the correct explanation of (A)
- BBoth (A) and (R) are correct but (R) is not the correct explanation of (A)
- C(A) is correct but (R) is not correct
- D(A) is not correct but (R) is correct
Correct answer
C. (A) is correct but (R) is not correct
Step-by-step solution
The Assertion (A) is correct. The Verhulst-Pearl logistic growth model is considered more realistic because, in nature, resources for growth for most animal populations are finite and become limiting sooner or later. The Reason (R) is incorrect. The logistic growth model assumes that a given habitat has enough resources to support a maximum possible number (carrying capacity, K), beyond which no further growth is possible. It is the exponential model that assumes unlimited resources. Answer: (A) is correct but (R)