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प्रश्न
What is transpirational pull?
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उत्तर
As water is lost from the leaf surface by transpiration, more water molecules are pulled up due to the tendency of water molecules to remain joined, i.e., cohesion. This produces a continuous column of water throughout the stem, which is known as the 'transpiration pull'.
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संबंधित प्रश्न
Very short answer question.
In which conditions transpiration pull will be affected?
Answer the following question.
Discuss theories of water translocation.
Explain capillarity theory.
Explain the term:
Ascent of sap
Long answer question.
Explain cohesion theory for translocation of water.
Find the physical process NOT involved in absorption of water in plants.
Oozing of sap from the cut end of herbaceous plants is due to ____________.
The process in which the loss of water takes place in the form of water vapour through stomata is called:
In vascular plants, growth takes place due to
What are the four main forces which contribute to the ascent of sap (upward movement of water and minerals) ? Name them and explain in short.
