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 soil bsunkr-+g-3m - ieoq/a cpx(;im*)is-o r0gf9anxydstuop .c +)d9 9ecosystem
[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 arel x kdh o:lp3pntmj+9v:4w)k28 9onpf tertiary 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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