Civil Engineering - UPSC Civil Service Exam Questions - Discussion
Discussion Forum : UPSC Civil Service Exam Questions - Section 13 (Q.No. 19)
19.
In which type of lakes, does a perfect ecological equilibrium among the producers, decomposers and consumer groups of organisms exist ?
Discussion:
2 comments Page 1 of 1.
Sadashiva said:
7 years ago
Option (C) is correct.
A perfect ecological system means that are producers, consumers and decomposers present in the system in such a manner that food and energy flows from one level to the other. The pollutants (nitrogen and phosphorous) disturb this equilibrium by increasing productivity of a lake increases productivity of a lake. As the productivity of a lake increases, its water quality reduces and equilibrium is disturbed. Oligotrophic lakes have low level of productivity so they can be considered to be perfect ecological system.
A perfect ecological system means that are producers, consumers and decomposers present in the system in such a manner that food and energy flows from one level to the other. The pollutants (nitrogen and phosphorous) disturb this equilibrium by increasing productivity of a lake increases productivity of a lake. As the productivity of a lake increases, its water quality reduces and equilibrium is disturbed. Oligotrophic lakes have low level of productivity so they can be considered to be perfect ecological system.
Akarsh jain said:
6 years ago
Productivity is less, that's why perfect ecological equilibrium occurs.
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