Question:

Which of the following types of ecosystem is expected in an area where evaporation exceeds precipitation, and mean annual rainfall is below $100mm$?

Updated On: Jul 7, 2022
  • Grassland
  • Shrubby forest
  • Desert
  • Mangrove
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The Correct Option is C

Solution and Explanation

Deserts have been variously classified as true deserts, having less than $120 \,mm$ annual rainfall, or extreme deserts showing less that $70\, mm yr^{-1}$ rainfall. In desert biomes, evaporation from soil always exceeds rainfall by $7$ to $50$ times.
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Concepts Used:

Ecosystem

An ecosystem is a structural and functional unit of ecology where the living organisms come in to interact with each other and the surrounding environment.

Structure of the Ecosystem:

The structure of an ecosystem is distinguished by the organization of both biotic and abiotic components. This involves the distribution of energy in our environment. It also comprises the climatic conditions prevailing in that particular environment. 

There are two main components of the structure of an ecosystem, namely: 

  • Biotic Components
  • Abiotic Components

The biotic and abiotic components are interconnected in an ecosystem. It is an open system where the energy and components can flow through the boundaries.