Food chain and food web

FOOD CHAIN

The transfer of food energy from the producers through a series of organisms with repeated eating and being eaten, is known as food chain.

The solar energy is traped in the ecosystem by the green plants and produce energy rich carbohydrates. These green plants are known as primary producers. The green plants are eaten by plant eaters also called primary consumers.

Herbivores  are in turn eater by meat eaters also called secondary consumers. Secondary consumers in turn may be still eaten by other carnivores which are known as tertiary consumers. After decay of both plants and animals simpler compounds are being released into the atmosphere due to the activity of deco posers which are re utilized by green plants.

In nature we generally distinguish two types of food chain  ----- Gazing food chain and detritus food chain.

Example-  A food chain in grassland ecosystem starts with grass and goes through grasshopper , the frogs , the snake and finally the Hawks.

Grasses--------------frogs-------------- snakes-------------- hawks

A detritus food chain start with the dead plants and animals and goes through (fungi, bacteria,protozoa), (snake, larvae,fishes,mollucs)

                 Fungi          insect larvae

                                   Large fishes 

Bacteria--------------- fishes-------------small fishes------------birds 

                Protozoa       molluscs