Energy Transfer

Question 1

The amount of available energy changes between the trophic levels found in a food chain or energy pyramid. Photos (left to right) by Mehmet Karatay, Jens Buurgaard Nielsen, Furryscaly, and Walter Siegmund How would the amount of available energy differ in the trophic level of the mouse compared to the trophic level of the hawk?

Revolt · Accepted Answer

Available energy would decrease from the mouse to the hawk.

Question 2

Entropy is greater at higher trophic levels than at lower levels.

Revolt · Accepted Answer

T

Question 3

The amount of available energy changes between the trophic levels found in a food chain or energy pyramid. Photos (left to right) by Mehmet Karatay, Jens Buurgaard Nielsen, Furryscaly, and Walter Siegmund In the food chain shown, which of the following changes between trophic levels would have the highest energy conversion efficiency?

Revolt · Accepted Answer

leaf to mouse

Question 4

Energy in an ecosystem flow from consumers to producers.

Revolt · Accepted Answer

F

Question 5

Which of the following statements about entropy is true?

Revolt · Accepted Answer

Entropy increases going from one trophic level to another.

Question 6

Which of the following levels is the most efficient at energy conversion?

Revolt · Accepted Answer

producers

Question 7

How are gross production and net production different?

Revolt · Accepted Answer

Net production is always less than gross production.

Question 8

The relationship between the amount of energy available for use and the amount of entropy in a food chain differs between trophic levels. Why would the amount of entropy increase from one trophic level to another in a food chain or energy pyramid?

Revolt · Accepted Answer

energy is lost at each level as heat, which increases randomization

Question 9

Why is a system’s work output limited?

Revolt · Accepted Answer

Energy is lost as heat in each stage, causing the amount of energy available to decrease with each stage.

Question 10

Which of the following organisms in the soil food chain does not obtain energy directly from plants?

Revolt · Accepted Answer

protozoa

Energy Transfer Answers

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