LABORATORY REVIEW
TRANSPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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rate of photosynthesis
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amount of oxygen
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rate of transpiration
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amount of glucose
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Detailed explanation-1: -The potometer does not measure the rate of transpiration accurately because not all of the water that is taken by the plant is used for transpiration (water taken might be used for photosynthesis or by the cells to maintain turgidity). The potometer measures the rate of uptake of water.
Detailed explanation-2: -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. Q. Ganong’s potometer is an instrument that is used to measure the rate of transpiration.
Detailed explanation-3: -Rate of transpiration is measured by the Ganong’s potometer. The device consists of a vessel containing water. A cut stem of a plant or a small plant with roots is placed in this vessel.