Food Chain And Food Web

Food Chain And Food Web - explained in detail -Basics

1. FOOD CHAIN AND FOOD WEB SUBMITTED BY : HARSIMRAN KAUR ROLL NO: 25

2. FOOD CHAIN It is a linear network of living organisms in a community through which energy is transferred in the form of food, It describes relationship of organisms about who eats whom.

3. TYPES OF FOOD CHAIN : On the basis of choice of habitat, food chains are of two types : 1) Terrestrial food chain 2) Aquatic food chain

4. Terrestrial Food Chain A terrestrial food chain is  a depiction of energy flow within an ecosystem comprised of organisms that live on land . Grass ->Insects -> Snake -> Hawk

5. Aquatic Food Chain  Aquatic food chain is  the food chain which occurs in water . It consists of the phytoplankton which obtain the first trophic level, the zooplanktons obtain the second trophic level and the small fishes obtain the third trophic level Phytoplankton -> Zooplankton -> Fish -> Shark .

6. TRANSFER OF ENERGY According to ten per cent law only 10 per cent of the energy entering a particular trophic level of organisms is available for transfer to the next higher trophic level

7. FOOD WEB A food web consists  of all the food chains in a single ecosystem . ... Each food chain is one possible path that energy and nutrients may take as they move through the ecosystem. All of the interconnected and overlapping food chains in an ecosystem make up a food web

8. SIGNIFICANCE OF FOOD CHAIN : 1)Food chain helps in studying feeding relationships between organisms. 2) Food chain also helps us to know how much energy we gain by consuming which food. 3) Food chain helps us to know energy flow from one trophic level to another trophic level.  

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