Food Chain Definition For Class 3

Food chain in a terrestrial ecosystem. The food chain is a linear sequence of organisms where nutrients and energy is transferred from one organism to the other. A food chain is a pathway that represents the exchange of energy from one organism to another.

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| meaning, pronunciation, translations and examples

Food chain definition for class 3. It starts with the primary source, like the sun or hydrothermal vents, where producers make food, continues with consumers, or animals who eat the food, and ends with the top predator. Plants are the most common producers. A food chain in a grassland ecosystem may consist of grasses and other plants, grasshoppers, frogs, snakes and hawks (figure 8.3).

For example if there was a shortage of fish for penguins to eat, penguins would survive less well reducing the food supply for animals further up the food chain. A succession of organisms in an ecological community that are linked to each other through the transfer of energy. Food chain, in ecology, the sequence of transfers of matter and energy in the form of food from organism to organism.

Learn more about food chains in this article. A food web shows multiple food chains, multiple relationships and connections. A food chain is a linear network of links in a food web starting from producer organisms (such as grass or trees which use radiation from the sun to make their food) and ending at apex predator species (like grizzly bears or killer whales), detritivores (like earthworms or woodlice), or decomposer species (such as fungi or bacteria).a food chain also shows how the organisms are related with.

These animals then become food for other animals, creating a food chain. It begins with producer organism, follows the chain and ends with decomposer organism. Food chains intertwine locally into a food web because most organisms consume more than one type of animal or plant.

They also help us to appreciate the energy flow mechanism and matter circulation in ecosystem and understand the movement of toxic substances in the ecosystem. Food chains start with organisms that make their own food, called producers. In scientific terms, a food chain is a chronological pathway or an order that shows the flow of energy from one organism to the other.

A food chain always starts with a producer. Grazing food chain is a type of food chain in which energy at the lowest trophic level is acquired via photosynthesis. Starting the food chain are producers, which are plants, fruits, and vegetables that make their own energy from the sun.