Question

what is meant by food chain ?the number of tropic levels in food chain is limited.give reason to justify the statement.

Answer 1

ecosystem

A food chain shows the feeding relationship between different organisms in a particular environment and/or habitat. plants are at the top of a food chain because they are producers that make their food from a process called photosynthesis . Organisms that can make their own food are called producers. Consumers are animals that eat the products of producers or other animals. The animal that eats the producer is called the primary consumer and it gains the most amount of energy. The animal that eats the primary consumer is called a secondary consumer which in the primary consumer's energy which is tranfered becomes lower due to the primary consumer consuming some energy. The animal that eats the secondary consumer is called a tertiarry consumer and so on to fourth, fifth, etc. The direction of arrows between the organisms shows who eats what and what gets eaten by what.

Also, a food chain represents a series of events and consumation in which food and energy are consumed from one organism in an ecosystem to another. Food chains show how energy is passed from the sun to producers, from producers to consumers, and from consumers to decomposers such as fungi. They also show how animals depend on other organisms for food.

Answer 2

A food chain is a linear network of links in a food web starting from producer organisms and ending at apex predator species, detritivores, or decomposer species. A food chain also shows how the organisms are related with each other by the food they eat. Each level of a food chain represents a different trophic level