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प्रश्न
Explain the term:
Transpiration
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उत्तर
- Transpiration is the process by which plants lose water vapor from their aerial parts, mainly through the stomata in the leaves.
- It mostly occurs during the day when stomata are open for gas exchange.
- This water loss occurs as water vapor into the atmosphere.
- Transpiration helps in the ascent of sap by creating a transpiration pull.
- It also helps in cooling the plant and maintaining water balance.
- Transpiration occurs through three main sites - cuticle, stomata, and lenticels.
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संबंधित प्रश्न
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.
- Explain the process named above in Q.3(a)(i).
- Why was the pot covered with a plastic sheet?
- Suggest a suitable control for this experiment.
- Mention two ways in which this process is beneficial to plants.
- List three adaptations in plants to reduce the above mentioned process.
Transpiration is the loss of water as water ______ from the ______ parts of the plant.
Give suitable explanation for the following:
Cork and bark of trees help in preventing loss of water
Name the following.
The tissue which conducts water absorbed by the roots to the upper parts of a herbaceous plant.
Distinguish between the following :
Cuticular transpiration and lenticular transpiration
Name the cell that surrounds the stoma.
Identify the wrong statement and correct it.
Leaves perform the function of transpiration only.
Describe briefly the three physical properties of water which helps in ascent of water in xylem.
Water molecule is very polar. Polar end of molecule attracts opposite charges on another water molecule (acts like magnet). How will you explain this property of water with reference to upward movement of water? Comment on the upward movement of water given the intermolecular hydrogen bonding in water.
Enlist different advantages of transpiration.
