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प्रश्न
How is transpirational pull caused?
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उत्तर
As the 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 (cohesion), and thus produce a continuous column of water through the stem. Thus, a continuous column of water is produced through the stem of the plant.
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संबंधित प्रश्न
Very short answer question.
Which type of plants have negative root pressure?
Answer the following question.
Discuss theories of water translocation.
Explain capillarity theory.
Explain the term:
Ascent of sap
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:
Root pressure theory was proposed by ______.
Attraction of water molecules to polar surface is known as ______.
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.
