本题目来源于试卷: Unity and Diversity A.1 Water，类别为 IB生物学
[单选题]
The micrograph below shows the longitudi d1m.xz x8:npc nal gb nn 3yu:d1u)h.c g3icross-section of a stem from a plant in the Pinus genus. Xylem vessels are cle y1u.:n3)bhungi c3g darly visible.
The xylem is composed of hollow, tube-like tissues that transport water through capillary action. What property of water explains capillary action?
A. Melting point
B. Adhesive properties
C. Specific heat capacity
D. Buoyant forces
参考答案: B
本题详细解析:
Adhesive properties (Choice B) refer to water’s ability to o:r 3 b26gcgxz/, jp5endi/pfstick to charged surfaces or polar molecules. This, tn zceg3 op6// j2rf ipxbgd5:,ogether with cohesion, allows water to move against gravity up the stem through capillary action.
Water's melting point (Choice A) is the temperature at which it changes its state from solid to liquid.
The specific heat capacity (Choice C) of water pertains to the amount of heat energy needed to raise its temperature by 1 °C.
The buoyant force of water (Choice D) is the upward force on an object submerged or partially immersed in water, equal to the weight of the displaced water.
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