| Food Chain | Food Web |
| Units. It consists of a single unit of food relations. | It is a complex formed by several units of food relations |
| Sequence. It is a straight sequence of organisms. | It is a network of many linkages among the connected food chains. |
| Populations. It has a maximum of 4-6 populations of different species. | A food web consists of numerous populations of different species. |
| Food. Only one type of organism is used as food by a particular type of organism. | An organism can use two to several types of organisms as food. |
| Disturbance. A disturbance in food chain is difficult to overcome. | A disturbance is overcome after some time. |
| Endangered Species. It does not help in restoring population of endangered species. Rather it may decline further. | A food web helps in increasing population of endangered species. |