Biology : PU-CET (U.G) 2016 Panjab University Entrance Exam With Answers

Practice Mode:
17.

Ecotone Is Best Described As :

A: State Of Equilibrium Among Various Trophic Levels In An Ecosystem
B: Potentiality Of An Animal To Adjust To New Circumstances
C: Transition Zone Between Two Or More Diverse Communities
D: Maximum Biomass An Ecosystem Can Support

The answer is: C

Explanation

C: Transition Zone Between Two Or More Diverse Communities.

An ecotone is a boundary area between two or more distinct ecological communities or ecosystems, where the characteristics of the two communities blend together and create a transition zone. The ecotone is usually characterized by a greater diversity of species and a mixture of the characteristic species from both ecosystems. It can occur naturally, or it can be created by human activity, such as the edge between a forest and a meadow. The ecotone can be considered a unique and important habitat for many species that require the resources and conditions of both ecosystems.