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IB ESS Unit 2: Ecosystems & Ecology (id: c2cf8dddf)

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admin 发表于 2024-4-15 21:40:37 | 显示全部楼层 |阅读模式
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]
Identify the incorrect description of energy flow in a terreoqb9-ek6p,r(jncws ,g ,efx 9 strial ecosysq(wqku1 8 v; ky3t33xf l1rbxytem.

A. Trophic relationships between plants and animals do not exist as a simple chain, but tend to be more elaborate and interwoven as a food web.
B. In food webs, different herbivores may feed on the same plant. Also, the same species of herbivore may feed on different plants.
C. Consumers which feed on the dead remains of plants and animals are called detritivores.
D. In food webs, a typical food chain consists of approximately 6 organisms.


参考答案:  D


本题详细解析:
The length of food chains tends to be shorter than 6 o9 .f1oxnn7nxt; t +sgqrganisms, even including parasites and detritivores. When energy is passed from one organism to the next, most of the energy is generally lost as heat whicq+nxn1x7o9gn ts;f .th means that less and less energy is available to higher trophic levels.
All other statements are true.

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