Energy Flow in Ecosystems

Question 1

Which statement best contrasts food chains and food webs?

Revolt · Accepted Answer

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

Question 2

In an ecosystem, a deer consumes grass. What percentage of energy will the deer acquire from the grass?

Revolt · Accepted Answer

10%

Question 3

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

Revolt · Accepted Answer

rabbit

Question 4

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?

Revolt · Accepted Answer

food web

Question 5

Which of these is a heterotroph?

Revolt · Accepted Answer

consumer

Question 6

Which organisms obtain energy from dead or decaying matter? Select two options. groundhogsdaisiesearthwormsbacteriahumansphytoplankton

Revolt · Accepted Answer

earthworms; bacteria

Question 7

Which of these is a producer?

Revolt · Accepted Answer

fern

Question 8

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

Revolt · Accepted Answer

50,000 calories

Question 9

The diagram shows a food web.

Revolt · Accepted Answer

The entire food web would be affected.

Energy Flow in Ecosystems Answers

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