IB ESS Unit 2: Ecosystems & Ecology (id: 8e172c404)

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 food web in a sd kcvtu+ :g*jfqc 1 8*,a;-3ojfigrw cot hr y1bseqo8)5hza++ il ecosystem




[Adapted from Ingham, E. R. (n.d.). Natural Resources Conservation Service. Soil Food Web | NRCS Soils. Retrieved April 16, 2022, from https://www.nrcs.usda.gov/wps/portal/nrcs/detailfull/soils/health/biology/?cid=nrcs142p2_053868. Copyright free.]
Deduce which organism in the food web is not assigned to its correct mode of nutrition.

A. Bacteria and fungi are decomposers
B. Birds are primary consumers
C. Nematode is a secondary consumer
D. An arthropod that eats the smaller arthropod is a predator


参考答案:  B


本题详细解析:
In this food web, birds are tertiaryk3kl-h xdo:efpby2g / g0i7j + consumers.
All other options are correct; the organism has been assigned its correct mode of nutrition. Decomposers eat dead organic materials (Option A).

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