Food Chains
The interaction of the autotrophic and heterotrophic organisms in which one organism consumes another, this is called a food chain. In a food chain there is a continuous flow of energy from the sun, through the plants to the various animals. In a food chain there are always a producer and a consumer. All food chains begin with a green plant and may consist of three to five links.
Food Web
Consists of various food chains that interact with one and another. As a result interacting with energy flow within a ecosystem, it can be depicted as a digram which shows trophic/feeding relationships.
Pyramids
Number pyramid – Pyramid constructed to show the relationship between the different numbers of each trophic level.
Energy pyramid – Pyramid constructed to show the amount of energy received by each trophic level.
Biomass pyramid – Pyramid constructed to show the dry weight of each trophic level in an ecosystem.
Energy pyramid – Pyramid constructed to show the amount of energy received by each trophic level.
Biomass pyramid – Pyramid constructed to show the dry weight of each trophic level in an ecosystem.