Academic session 2026-27, Chapter 11 in the current curriculum.
Welcome to the NCERT Solutions for Class 12 Biology - Chapter Organisms and Population. This page offers a step-by-step solution to the specific question from Exercise 0, Question 7:
In an aquarium two herbivorous species of fish are living together and feeding on phytoplanktons. As per the Gause’s Principle, one of the species is to be eliminated in due course of time, but both are surviving well in the aquarium. Give possible reasons.
. With detailed answers and explanations for each chapter, students can strengthen their understanding and prepare confidently for exams. Ideal for CBSE and other board students, this resource will simplify your study experience.In an aquarium two herbivorous species of fish are living together and feeding on phytoplanktons. As per the Gause’s Principle, one of the species is to be eliminated in due course of time, but both are surviving well in the aquarium. Give possible reasons.
Competition is a rivalry relationship (competition for the same thing) between two or more organisms. A competition between individuals of same species (intraspecific) is more acute than the competition between individuals of different species as all the members in a intraspecific competition that have some basic requirements such as food, water, light, space, mating and shelter.
But it is true only when the resources are limited. According to Gause’s principle, if the two competing species coexist in a stable or same environment then it leads to differentiation of their realized niches; and if there no differentiation then one competing species will be eliminated, i.e. one of the species is to be eliminated. But recent studies have revealed that species facing intraspecific competition may evolve mechanism to encourage co- existence rather than exclusion which can also be done by a method known as ‘resource partitioning’.
NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:
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Welcome to the NCERT Solutions for Class 12 Biology - Chapter . This page offers a step-by-step solution to the specific question from Excercise 0 , Question 7: In an aquarium two herbivorous species of fish are living together and feeding on phytoplanktons. As....
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