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 longitudinal cross-section of a stem x zt ova*o na6;q;cy8-from a plant ;ztyc n-*xvao 68; oqaew s1)y 7(kel 9uscg*f/hkd6 j in the Pinus genus. Xylem vessel c led/19gssf(w6*e ) kyj7khu s are clearly 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 stick to charged sogl0/v4n63uk uqb vm)urfaces or polar molecules. This, to3ov)v4ugmk6l /b0qu ngether 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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