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Class 12 Biology-Ecosystem-NCERT Solutions For Class 12


Class 12 Biology-Ecosystem-NCERT Solutions For Class 12

What do we mean by an Ecosystem?
We begin the topic by understanding the meaning of ecosystem.
The ecosystem comprises two words “eco” and “system”. The literal meaning of eco is environmental or which is not harmful to the environment, whereas the literal meaning of the system is an assemblage of things in regular order. Thus ecosystem means assemblage of living species and non- living elements in an orderly manner in a specific local or regional environment.
An ecosystem can be defined as a habitat (a place where an organism lives), where we find the living organisms and their relationship among themselves and their surrounding environment.
The ecosystem is the basic unit of the biosphere. Whereas, biosphere is made up of three components-
  1. Atmosphere- a thin blanket of air surrounding the earth.
  2. Lithosphere- total land area on the earth
  3. Hydrosphere- all types of water bodies on the earth-like ponds, lakes, rivers, seas, and oceans.
The whole earth is considered as biosphere consisting of thousands of ecosystems.
Thus the ecosystem includes water, air, sunlight, soil, plants, microorganisms, insects, small animals and big animals including human beings.
For animated videos on ecosystem, click here online classes for Class 12 Biology
Structure of an ecosystem
The living and non- living entities of an ecosystem is classified into two components;
  • Biotic components
  • Abiotic components
Continue... Ecosystem Class 12 Biology
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