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]
Zooxanthellae are algae that live inside coral. Corals feed on the cahiz*k4.re tcb)x-fp h*6:voerbon cz )x.89p0fl5ajeie*s efaf.8r i :c jjompounds produ* f)x l.:5.ae8jjrp98si jeafzicf e0ced by zooxanthellae from carbon dioxide, water, and sunlight.
State the method of nutrition of these organisms.What is Zooxanthellae and Coral?
A. Autotroph; Heterotroph
B. Autotroph ;Detritivore
C. Heterotroph;Autotroph
D. Detritivore ;Heterotroph
参考答案: A
本题详细解析:
Zooxanthellae make carbon compounds uif+avxy a9: puf4/v/from carbon dioxide, water and energy from sunlight. So, zooxanthellae are autotrophs (organisms that make their own food). The coral feed on the carbon compounds produced by zooxanthellae. So, the corals are heterotrophs (organisms that muuxv +ui:v9ap4f/y/ f ast obtain carbon compounds from other organisms).
Detritivores feed on dead organic matter (Options B and D).
Option C has the nutrition of these organisms backward.
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