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What is the significance of transpiration in plants?

Important Questions on Transport in Plants

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Transpiration and root pressure cause water to rise in plants by:
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Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening, carbon dioxide diffuses into the plant during photosynthesis. Reason out the above statements using one of the following options:
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In both transpiration and evaporation, water is lost in the form of vapour yet they differ, because
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External factors that affect the rate of transpiration include:
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Generally stomata found on the lower surface of leaf. Thus approximate percentage of transpiration through abaxial surface is
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A twig kept in water having some salt remains fresh for longer period due to
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In hot summer day, plant cooling is due to
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The water lost during transpiration _____.
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Types of transpiration include
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In hydrophytes, the rate of carbon assimilation is
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Maximum transpiration occurs in
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In a plant organ, which is covered by periderm and in which the stomata are absent, some gaseous exchange still takes place through:

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Which of the following is not the type of transpiration
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Internal factors that do not affect the rate of transpiration includes:
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_____  is the loss of water from a plant in the form of water vapor. 
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Wilting of a plant results from excessive