Multiple Choice
Which of the following best describes the direction of energy flow through an ecosystem?
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52. Ecosystems
Energy Flow Through Ecosystems
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Using the data in this table, calculate the: Net production efficiency of the grass.
A
5.4%
B
21.7%
C
2.17%
Verified step by step guidance1
Understand the concept of Net Production Efficiency (NPE). It is calculated as the ratio of net production to gross production, expressed as a percentage.
Identify the relevant data from the table: Gross grass production is 37,850 kcal/(m²*yr) and Net grass production is 8,230 kcal/(m²*yr).
Use the formula for Net Production Efficiency: \( \text{NPE} = \left( \frac{\text{Net Production}}{\text{Gross Production}} \right) \times 100 \).
Substitute the values into the formula: \( \text{NPE} = \left( \frac{8,230}{37,850} \right) \times 100 \).
Calculate the result to find the Net Production Efficiency of the grass, which will give you the percentage value.
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