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Did you know?
Hydrogen is the most abundant element in the universe, making up ~75% of all matter.
Did you know?
Hydrogen is the most abundant element in the universe, making up ~75% of all matter.
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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