Cycling of Matter and Energy: Food Chains and Food Webs Quiz

A group of organisms within an ecosystem is called a(n)

Autotroph

Omnivore

Biomass pyramid

Trophic level

Which of the following statements best explains the key difference(s) between a food chain and a food web?

A food chain represents a single "chain."

A food chain is different from a food web because it only shows interactions between consumers.

While a food chain shows the movement of matter and energy from one trophic level to another, the food web shows the complex movement of food energy throughout all the producers and consumers in an ecosystem.

Food chains and food webs can be used as visual tools of organisms' feeding patterns within an ecosystem and help show how matter and energy move from one group of organisms to another and how the matter and energy relate to the overall biomass.

Energy cannot be created or destroyed.

True

False

A food web shows the more complex movement of energy and matter within an ecosystem.

True

False

Only a small fraction of matter consumed at the lower levels of a food web are transferred upward.

True

False

Since only a small amount of energy moves up in each level of the food web, the higher up the food web the consumer is, the more he has to consume. Therefore, there are generally fewer organisms at higher levels of a food web.

True

False

Gain energy and matter by consuming producers.

Producer

Primary consumer

Secondary consumer

Tertiary consumer

Gain energy and matter through photosynthesis

Primary consumer

Secondary consumer

Tertiary consumer

Producer

Consume secondary consumers

Producer

Primary consumer

Secondary consumer

Tertiary consumer

Break down dead organisms

Producer

Primary consumer

Decomposer

Tertiary consumer

Also known as a producer

Autotroph

Heterotroph

Omnivore

Detritivore

Consumes both producers and consumers

Autotroph

Heterotroph

Omnivore

Herbivore

Break down dead organism and move matter and energy back into the soil

Heterotroph

Herbivore

Detritivore

Also known as a consumer

Heterotroph

Omnivore

Autotroph

Cycling of Matter and Energy: Food Chains and Food Webs Quiz

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