Statement I: | The forces generated by transpiration can lift a xylem-sized column of water over 130 meters height. |
Statement II: | Transpiration cools leaf surfaces sometimes 10 to 15 degrees, by evaporative cooling. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyList 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 |
Options: | A | B | C | D |
1. | II | I | IV | III |
2. | II | IV | I | III |
3. | IV | III | II | I |
4. | III | I | IV | II |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following physical properties of water is/are responsible for providing water, the high tensile strength and high capillarity during ascent of sap in the plants?
1. Surface tension and cohesion
2. Cohesion, adhesion and surface tension
3. Cohesion only
4. Adhesion and cohesion
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe process responsible for facilitating loss of water in liquid form from the tip of grass blades at night and early morning is:
1. Root pressure
2. Imbibition
3. Plasmolysis
4. Transpiration
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology