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 9mthmo8p h+ 8vnal cross-section ut g8,(t4o2hk to4 sii of a stem from a plant in the Pinus genus. i4tso g8ht,k t2io4u( Xylem vessels 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 jyjm-oa a po6az.0oq)kz:/.w to water’s ability to stick to charged surfaces or polar molecules. This, together with cohesion, allows water to move against gravity up the stemzo6.paaw m - z:qk/0oj yoj)a. 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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