MHT CET 202625 AprilEvening Shift
- Exam
- MHT CET
- Year
- 2026
- Date
- 25 April
- Shift
- Evening Shift
- Subject
- Biology
- Chapter
- Transport in Plants
MHT CET 2026 · 25 April · Evening Shift · Biology · Transport in Plants
Water in the xylem cells of plants shows capillarity due to its...
Water in the xylem cells of plants shows capillarity due to its properties like ___________.
Options
- Asurface tension only
- Badhesive forces only
- Ccohesive forces only
- Dsurface tension and forces of cohesion and adhesion
Correct answer
D. surface tension and forces of cohesion and adhesion
Step-by-step solution
The ascent of xylem sap in plants depends mainly on the physical properties of water, which include cohesion, adhesion, and surface tension.
Cohesion is the mutual attraction between water molecules. Adhesion is the attraction of water molecules to polar surfaces, such as the walls of the xylem vessels. Surface tension is the property by which water molecules are attracted to each other in the liquid phase more than to water in the gas phase.
Together, these properties give water high tensile strength and high capillarity, allowing it to rise in the narrow tubes of xylem cells.
Answer: surface tension and forces of cohesion and adhesion
Cohesion is the mutual attraction between water molecules. Adhesion is the attraction of water molecules to polar surfaces, such as the walls of the xylem vessels. Surface tension is the property by which water molecules are attracted to each other in the liquid phase more than to water in the gas phase.
Together, these properties give water high tensile strength and high capillarity, allowing it to rise in the narrow tubes of xylem cells.
Answer: surface tension and forces of cohesion and adhesion