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l.下列关于光合作用强度的叙述,正确的是(A)叶片从幼到老光合作用强度不变(B)森林或农田中植株上部叶片和下部叶片光合作用强度有差异(C)光合作用强度是由基因决定的,因此是固定不变的(D)在相同光照条
問題詳情
l.下列关于光合作用强度的叙述,正确的是
(A)叶片从幼到老光合作用强度不变
(B)森林或农田中植株上部叶片和下部叶片光合作用强度有差异
(C)光合作用强度是由基因决定的,因此是固定不变的
(D)在相同光照条件下,各种植物的光合作用强度相同
參考答案
答案:B
難度:適中0.5
統計:A(0),B(0),C(0),D(0),E(0)
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