LS 2-3 Test (Food Chains/Webs, Energy Pyramids)

Front

What is a food chain?

Back

A food chain is a linear sequence that shows how energy and nutrients flow from one organism to another in an ecosystem, starting from producers to various levels of consumers.

Front

What are producers in a food chain?

Back

Producers are organisms that can make their own food through photosynthesis, such as plants. They form the base of the food chain.

Front

What are consumers in a food chain?

Back

Consumers are organisms that cannot produce their own food and rely on eating other organisms. They can be herbivores, carnivores, or omnivores.

Front

What is a trophic level?

Back

A trophic level is a position in a food chain or food web that indicates the organism's role in the flow of energy and nutrients, such as producers, primary consumers, and secondary consumers.

Front

What is an herbivore?

Back

An herbivore is an animal that primarily eats plants. Examples include rabbits and grasshoppers.

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What is a carnivore?

Back

A carnivore is an animal that primarily eats other animals. Examples include snakes and hawks.

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What is an omnivore?

Back

An omnivore is an animal that eats both plants and animals. Examples include humans and bears.

Front

What is an energy pyramid?

Back

An energy pyramid is a graphical representation that shows the flow of energy at different trophic levels in an ecosystem, with producers at the base and top predators at the top.

Front

Why are there fewer organisms at the top of the energy pyramid?

Back

There are fewer organisms at the top of the energy pyramid because energy is lost at each trophic level due to metabolic processes, making it less available for higher-level consumers.

Front

What role do decomposers play in an ecosystem?

Back

Decomposers break down dead organic matter, returning nutrients to the soil and making them available for producers.