Transpiration in Plants


 
 
Concept Explanation
 

Transpiration in Plants

Transpiration in Plants:  

A tissue called xylem acts as the pipeline, and takes water and minerals from the roots up the stem, and to the leaves. Absorption of water and minerals is a continuous process. Water is continuously being lost from the leaves by the process of transpiration (loss of water vapour from the stomata of leaves). The rate of transpiration increases in a hot sunny day or in moving air.

Transpiration: loss of water in the form of vapour from the aerial parts of the plant. It takes place mainly through stomata. It has the following advantages:

  • It helps in the absorption and upward movement of water and minerals creating a ‘transpiration pull.’
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    Sample Questions
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    Question : 1

    In plants, the transportation of water and minerals is done by _____________ .

    Right Option : A
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    Question : 2

    In plants ______________________  helps in the regulation of temperature.

    Right Option : A
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    Question : 3

    Which of the following are correct ?

    (a) The vascular tissue called xylem carries water from the roots upwards through the stem and branches up to the leaves .

    (b) Absorption of water and minerals is a continuous process .

    (c) Transpiration also cause cooling on the plant surface.

    Right Option : D
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