Food Chain, Food Web and Ecological Pyramid

Front

What is a food chain?

Back

A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another.

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What is a food web?

Back

A food web is a complex network of interconnected food chains in an ecosystem, showing how different organisms are related through feeding relationships.

Front

What is an ecological pyramid?

Back

An ecological pyramid is a graphical representation that shows the relative amounts of energy or biomass at each trophic level in an ecosystem.

Front

What are producers in an ecosystem?

Back

Producers are organisms, like plants and algae, that can make their own food through photosynthesis and form the base of the food chain.

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What are primary consumers?

Back

Primary consumers are herbivores that eat producers (plants) and are the second level in the food chain.

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What are secondary consumers?

Back

Secondary consumers are organisms that eat primary consumers; they can be carnivores or omnivores.

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What is the role of apex predators in an ecosystem?

Back

Apex predators are at the top of the food chain and have no natural predators, helping to control the populations of other species.

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How does energy flow in a food chain?

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Energy flows from producers to primary consumers, then to secondary consumers, and so on, with energy decreasing at each trophic level.

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What is competition in a food web?

Back

Competition occurs when two or more organisms vie for the same resources, such as food, in a food web.

Front

What do the arrows in a food web represent?

Back

The arrows in a food web indicate the direction of energy flow, pointing from the organism that is eaten to the organism that eats it.