Movement and accumulation of ions across a membrane against their concentration gradient can be explained by
Given below are two statements :
Statement I : The forces generated transpiration can lift a xylem-sized column of water over 130 meters height.
Statement II : Transpiration cools leaf surfaces sometimes 10 to 15 degrees evaporative cooling.
In the light of the above statements, choose the most appropriate answer from the options given below :
Identify the correct statements:
A. Lenticels are the lens-shaped openings permitting the exchange of gases.
B. Bark formed early in the season is called hard bark.
C. Bark is a technical term that refers to all tissues exterior to vascular cambium.
D. Bark refers to periderm and secondary phloem.
E. Phellogen is single-layered in thickness.
Choose the correct answer from the options given below:
Match List I with List II :
| 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 |
Choose the correct answer from the options given below :