Energy Flow in Ecosystems

Which of these is a producer?

fern

The organisms in a food chain are listed in order of trophic level from left to right. Based on the food chain, if a bald eagle acquires 50 calories of energy, how much energy did the grasshopper get from the plant?

50,000 calories

Which statement best contrasts food chains and food webs?

Food chains show a single path of energy in an ecosystem, and food webs show all the overlapping food chains in that ecosystem

The diagram shows a basic food chain. Which is the primary consumer?

rabbit

What would most likely happen to the food web if the amount of grass drastically decreased?

The entire food web would be affected.

Maggots get their energy by breaking down dead and decaying animals. What are maggots?

decomposers

Which organisms obtain energy from dead or decaying matter? Check all that apply.

earthworms bacteria

Nida draws a diagram with insects, birds, and mice. She shows the mice eating grass; hawks, snakes, and toads eating the insects; and foxes, hawks, and snakes eating the birds and mice. The snakes are also eating the toads. Which best describes the diagram?

food web

Which process is used by most producers to turn sunlight into food energy?

photosynthesis

In order to support all of the organisms in an ecosystem, which should have the greatest amount of biomass?

producers