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Did you know?
Water is the only substance found naturally in all three states on Earth's surface.
Did you know?
Water is the only substance found naturally in all three states on Earth's surface.
Given below are two statements: 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 3 degrees, by evaporative cooling. Choose the most appropriate answer from the options given below:
Both Statement I and Statement II are correct.
Both Statement I and Statement II are incorrect.
Statement I is correct but Statement II is incorrect.
Statement I is incorrect but Statement II is correct.
To solve this problem, we need to analyze the given statements:Statement I: The forces generated by transpiration can lift a xylem-sized column of water over 130 meters height. - Transpiration creates a negative pressure (tension) in the leaf, which is transmitted to the xylem. - This tension can indeed lift water to great heights, as seen in tall trees. - The cohesion-tension theory explains how water can be pulled up to such heights, and 130 meters is within the range of possibility for this mechanism. - Therefore, Statement I is correct.
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