NEETZoologyOrganisms and Populations
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): In population ecology, the parameter ' r ' is a very important parameter chosen for assessing impacts of any biotic or abiotic factor on population growth. Reason (R): The parameter ' r ' represents the extrinsic rate of natural increase in the exponential growth model. In the light of the above st
Options
- ABoth (A) and (R) are true and (R) is the correct explanation of (A)
- BBoth (A) and (R) are true but (R) is not the correct explanation of (A)
- C(A) is true but (R) is false
- D(A) is false but (R) is true
Correct answer
C. (A) is true but (R) is false
Step-by-step solution
Assertion (A) is true. According to NCERT, the parameter ' r ' is indeed a very important parameter chosen for assessing the impacts of any biotic or abiotic factor on population growth. Reason (R) is false. The parameter ' r ' represents the 'intrinsic rate of natural increase', not the 'extrinsic' rate. It is an inherent property of the population derived from its per capita birth and death rates. Therefore, (A) is true but (R) is false. Answer: (A) is true but (R) is false