本题目来源于试卷: Form and Function B.7 Transport，类别为 IB生物学
[单选题]
What is the main factor that causes the pressure6w t cv;xq+v bn3k;u,j inside xylem vessels to px7)7j7tdcg a01gnsegv,(rjbe lower than atmospher, )cdj gs7j0ge1n rva7gp7xt(ic pressure?
A. Cohesive properties of water inside xylem vessels
B. Evaporation of water during transpiration
C. Water molecules sticking to the walls of xylem vessels
D. Exchange of oxygen and carbon dioxide through the stomata
参考答案: B
本题详细解析:
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