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. Coral8p8akce,6/ l 8djw c ax;khb7-j3zirls feedjynj0;0i49s5 .mcaf z akbc w7oa0 o7y on the carbon compounds produced by zooxanthellazk077;09b sm.o n4fjjwia y0oay5ccae 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 from carbon dioxide, water and q 6 r+1zuo/ioitp/t 4sa dq99lenergy from sunlight. So, zooxanthellae are autotrophs (organisms that make their own food). The coral feed on the carbon compounds produced by zooxanthellae. So, th6torz1t+/qq l 9i /du4oaisp9e corals are heterotrophs (organisms that must 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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