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 statement that is not true o,w0pz nii: rp*f denitrifying bacterif9mih1wc ;1 o fl*h9tsi- c)ehf*t e5ha.
A. Denitrifying bacteria are found in waterlogged soils.
B. Denitrifying bacteria reduce nitrate ($NO_3$)to nitrogen ($NO_2)$
C. Denitrifying bacteria are involved in nitrogen fixation.
D. Denitrifying bacteria are involved in adding small amounts of nitrogen to the atmosphere.
参考答案: C
本题详细解析:
Nitrogen fixation is ya eor 6r. 3,xzl4. +yjqgcs5ocarried out by bacteria that convert atmospheric nitrogen to q +,5.3 cxayeyro gj6s.r4o zlammonia ($NH_3$) or ammonium ($NH^{4+}$) +which can be used by some plants. An example would be Rhizobium living in nodules in the roots of leguminous plants like peas, beans and lentils.
All other options (A, C and D) are true of denitrifying bacteria.
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