SAT Subject Biology Practice Question 143: Answer and Explanation

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Question: 143

13. Ecologists measured the evapotranspiration and net primary production of different ecosystem types. Their results are shown in the graph.

How many ecosystem types have a higher rate of evapotranspiration than grassland?

A. 1
B. 2
C. 3
D. 4
E. 5

Correct Answer: B

Explanation:

Only two ecosystem types, tropical rain forest (white triangle) and temperate forest (black triangle), have a higher rate of evapotranspiration than grassland (white circle).

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