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प्रश्न
How does transpiration help in the uptake of water from the soil?
उत्तर १
Transpiration is the loss of water in vapour form from the leaves into the air. As water is used up or lost from the leaves, more is sucked up from the xylem vessels. It’s like sucking water up a straw. So there is a continuous flow of water from the roots to the leaves. This movement of water up the xylem is called the transpiration stream.
उत्तर २
As water evaporates, a suction force is created, which draws water up through the stem.
Notes
Students should refer to the answers according to their questions.
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संबंधित प्रश्न
Discuss the factors responsible for ascent of xylem sap in plants
Give a reason.
What happens to the movement of the air-bubble if the apparatus shown above is kept in front of a fan?
Litmus paper is used to demonstrate transpiration from the leaves of the green plant.
An apparatus as shown below was set up to investigate a physiological process in plants. The setup was kept in sunlight for two hours. Droplets of water were then seen inside the bell jar. Answer the questions that follow:
Name the process being studied.
Define the following Term:
Transpiration
Answer the following question.
Define and or explain the term:
Transpiration
Name the cell that surrounds the stoma.
Do different species of plants growing in the same area show the same rate of transpiration at a particular time? Justify your answer.
Briefly describe the following:
Angina Pectoris
Transpiration occurs:
