Assertion (A): The logistic growth model of populations is considered more realistic than the exponential growth model.
Reason (R): Resources are finite.
In the light of the above statements, choose the most appropriate answer from the options given below:
The logistic growth model is more realistic because environmental resources are limited. As resources become limiting, population growth slows and approaches the carrying capacity (K).
Choose the correct statements regarding population interactions between two species.
(A) In both parasitism and commensalism, only one species benefits and the other species is harmed.
(B) Both species benefit in mutualism.
(C) Both species benefit in commensalism.
(D) In parasitism, only one species benefits and the other species is harmed.
(E) In amensalism, one species is harmed and the other is unaffected.
Choose the correct answer from the options given below:
Mutualism benefits both species. In parasitism, one benefits while the other is harmed. In amensalism, one species is harmed whereas the other remains unaffected. Commensalism benefits one species without affecting the other.
Which of the following equations depicts Verhulst-Pearl logistic population growth?
The Verhulst-Pearl logistic growth equation is dN/dt = rN[(K − N)/K], where K is carrying capacity, N is population size and r is the intrinsic rate of natural increase.
