PLANTS
TRANSPORT IN PLANTS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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In your experiments, transpiration was observed by:
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Directly measuring the amount of water leaving the leaves through transpiration
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Directly measuring the amount of water leaving the leaves through evaporation
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Directly measuring the amount of water absorbed through the plant sprig’s stem
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all of these
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Explanation:
Detailed explanation-1: -The rate of transpiration can be calculated by measuring the distance travelled by an air bubble in a capillary tube over a given time. The faster the bubble moves, the greater the rate of water uptake – and so the greater the assumed rate of transpiration.
Detailed explanation-2: -You can demonstrate capillary action and transpiration by placing a flower in a glass of coloured water. After a few hours the petals will turn the same colour as the water, this is because the coloured water is transported up the stem and into the petals.
Detailed explanation-3: -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.
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