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 t .qem;/nie l* vhe or .ky 0zwb;jh0z0 mgoewu/w .m q,5lx92e+yp longitudinal cross-section of a stem from a plant in the Pinus genus. X 0z9. o5ml. 2 wu org+w/e0ewhjq,xpz;ymk0byylem 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 to water’s abili*u wa4zj;ge0m ty to stick to charged surfaces or polar molecules. This, toga4wugem jz0*; ether 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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