本题目来源于试卷: IB ESS Unit 2: Ecosystems & Ecology，类别为 IB环境系统与社会
[单选题]
Figure: A natural ener bi:k (+bw3c bg(t*padgy con oug 2k+g kr,i4version system
Identify the trophic classification of creatures that would best fit in the green box in the figure.
A. Heterotrophs
B. Chemoautotrophs
C. Photoautotrophs
D. Tertiary Consumers
参考答案: B
本题详细解析:
Option A is incorrect because heterotrophs consume complex okf: /(zjtx3 gvrganic food compoundvgt x3fkzj /(:s.
Option B is correct as these are producers that make their own food from inorganic compounds. However, they do not use sunlight and use oxygen.
Option C is incorrect because although photoautotrophs make their own food, they need sunlight to do so. In the Figure, sunlight is not an input. Moreover, oxygen is an output of photosynthesis, instead of an input as shown in the Figure.
Option D is incorrect as the system indicates a process that only producers would be able to complete.
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