TREE PHYSIOLOGY
TRANSPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The bubble moves 3 cm in 10 minute, calculate the rate of bubble movement
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0.3 min
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3.33 cm min-1
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3.33 cm
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0.3 cm min-1
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Explanation:
Detailed explanation-1: -The movement of the air bubble in the potometer corresponds to the plant’s intake of water, and the distance covered by the bubble in a given period determines the rate of transpiration.
Detailed explanation-2: -The volume of an air bubble becomes three times as it rises from the bottom of a lake to its surface. Assuming atmospheric pressure to be 75 cm of Hg and the density of water to be 1/10 of the density of mercury, the depth of the lake.
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