LABORATORY REVIEW
TRANSPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Amount of water absorbed equals the amount transpired
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Osmotic pressure
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Root pressure
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Potential difference between the tip of the tube and the plant
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Detailed explanation-1: -Principle: It works on the principle that the amount of water absorbed by a plant shoot is almost equal to water lost through transpiration.
Detailed explanation-2: -Investigating transpiration Under normal circumstances, the rate of water uptake gives a measure of the rate of transpiration . A simple potometer is a piece of capillary tubing to which a plant has been connected. The water uptake is measured by recording the time taken for a bubble in the tube to move a set distance.
Detailed explanation-3: -The principle on which a potometer works is that the amount of water absorbed is equal to the amount of water transpired. So the correct answer is B amount of water absorbed is equal to the amount of water transpired. Note: The rate of transpiration is calculated as amount of water loss.
Detailed explanation-4: -So, the correct answer is ‘Amount of water absorbed equals the amount transpired’.
Detailed explanation-5: -A potometer is a device used to measure the rate of transpiration or the rate of loss of water from the leaves of a plant.