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
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