問題詳情
15.Which of the following habitats would most likely have a high proportion of species of plants that are in symbiotic association with nitrogen-fixing bacteria?
(A)anoxic soils such as fens and bogs
(B) agriculturally productive regions that have gone fallow
(C) nutrient-limiting soils such as wet tropical rain forests
(D) alpine coniferous forests
參考答案
答案：C
難度：困難0.381818
統計：A(8),B(11),C(21),D(5),E(0)