Question
Distinguish between: Food chain and Food web.
| Food chain | Food web |
| 1. Food chain is the linear sequence of organisms for feeding purpose. | 1. Food web is interconnections between many small food chains. |
| 2. In food chain the flow of energy is through a single straight pathway from the lower trophic level to the higher trophic level. | 2. In food web, the energy flow is interconnected through numerous food chains in the ecosystem. |
| 3. In a food chain, members present at higher trophic level feeds on only single type of organisms. | 3. In a food web, one organism can feed on multiple types of organisms. |
| 4. Energy flow can be easily calculated in food chain. | 4. Energy flow is difficult to calculate in a food web. |
| 5. In food chain there is increased instability due to increasing number of separate and confined food chains. | 5. In food web there is increased stability due to the presence of the complex food chains. |
| 6. The whole food chain gets affected even if one group of an organism is disturbed. | 6. The food web does not get disturbed by the removal of one group of organisms. |
| 7. Member of higher trophic level depends or feed upon the single type of organisms of the lower trophic level. | 7. The members of higher trophic level depend or feed upon many different types of the organism of the lower trophic level. |
| 8. Food chain consists of only 4-6 trophic levels of different species. | 8. Food web contains numerous trophic levels and also of different populations of species. |
| 9. Competition is seen in members of same trophic level. | 9. Competition is seen in members of same as well as different trophic levels. |
| 10. Food chains are of two types: 1. Grazing food chain 2. Detritus food chain. | 10. In food web there are no types. |
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