What are classification of biotic components?

                       The members of biotic components of an ecosystem are grouped into three groups based on how do they get their food. 

                       1. Producers  (Plants).

                       2. Consumer (Animals).

                       3. Decomposers (Micro-organisms).

1. Producers (Autotrophs). 

                       Producers synthesize their food themselves through Photosynthesis. 

Examples - All green plants, trees. 

Photosynthesis : The green pigments called chlorophyll, present in the leaves of plants, converts CO2 and                             H2O in the presence of sunlight into carbohydrates.

       6CO2 +12H2O --------------------(HV + Chlorophyll)--------> C6H12O6 + 6O2 + 6H2O 

This process is called photosynthesis.

2. Consumers ( heterotrophs). 

                          Consumers are organisms,which cannot prepare their own food and depend directly or indirectly on the producers.

                            They cannot make organic compounds, but can transform one form of organic compounds into other form of organic compounds. 

Examples 

i) Plant eating species 

       Insects, rabbit, goat, deer, cow, etc., 

ii) Animals eating species 

       Fish, lions, tiger, Etc., 

3.Decomposers 

                            Decomposers are those organisms which feed on dead organisms, Plants and animals and decompose them into simpler compounds. During the decomposition inorganic nutrients are released. These inorganic nutrients together with other organic substances are then utilized by the producers of the synthesis of their own food. 

Examples Microorganisms like bacteria and fungi.