Match List - I with List - II and choose the correct answer.
| List - I | List - II |
| (a) Cohesion | (i) More attraction in liquid phase |
| (b) Adhesion | (ii) Mutual attraction among water molecules |
| (c) Surface tension | (iii) Water loss in liquid phase |
| (d) Guttation | (iv) Attraction towards polar surfaces |
Correct Answer :
a - (ii), b - (iv), c - (i), d - (iii)
Solution :
The correct option is a - (ii), b - (iv), c - (i), d - (iii).
Let us break down and understand each physical property of water and plant physiological processes listed in List - I by matching them with the correct definitions or descriptions in List - II:
(a) Cohesion matches with (ii) Mutual attraction among water molecules.
Explanation: Cohesion is the force of attraction between molecules of the same substance. In water, it refers to the mutual attraction between water molecules, primarily due to hydrogen bonding.
(b) Adhesion matches with (iv) Attraction towards polar surfaces.
Explanation: Adhesion is the attraction of water molecules to other polar surfaces, such as the walls of tracheary elements (xylem vessel elements and tracheids).
(c) Surface tension matches with (i) More attraction in liquid phase.
Explanation: Water molecules are attracted to each other in the liquid phase more than to water in the gas phase. This property gives water a high surface tension, making the surface of the liquid behave like a stretched elastic membrane.
(d) Guttation matches with (iii) Water loss in liquid phase.
Explanation: Guttation is the process of water loss in the form of liquid droplets from the margins of leaves through specialized structures called hydathodes. This occurs under conditions of high root pressure and low transpiration.
By compiling these matches:
a - (ii)
b - (iv)
c - (i)
d - (iii)
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