Energy Flow in Ecosystems

Question 1

Use the drop-down menus to complete each sentence.

Revolt · Accepted Answer

A is an organism that eats other organisms to gain energy; it is also called .: consumer; A is an organism that eats other organisms to gain energy; it is also called .: a heterotroph; A is an organism that makes its own food; it is also called .: producer; A is an organism that makes its own food; it is also called .: an autotroph; A is an organism that breaks down waste and dead organisms.: decomposer

Question 2

In Alaska, salmon feed on tiny plants called phytoplankton. During late summer, salmon gather in rivers to reproduce. Grizzly bears visit these rivers to feed on the large number of salmon.

Revolt · Accepted Answer

Phytoplankton are .: autotrophs; Both the salmon and the grizzly bears are .: consumers; Grizzly bears are .: secondary consumers

Question 3

Which organisms are secondary consumers? Check all that apply.

Revolt · Accepted Answer

kelp; kelp crab

Question 4

If the grass contains 100,000 kcal of energy, how much energy will a fox obtain from eating a bird?

Revolt · Accepted Answer

1,000 kcal

Energy Flow in Ecosystems Answers

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