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Question
Explain the term:
Transpiration
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Solution
- 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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RELATED QUESTIONS
Differentiate between osmosis and transpiration.
Transpiration is the loss of water as water ______ from the ______ parts of the 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.
What type of transpiration is possible in the xerophyte Opuntia?
What causes the opening and closing of guard cells of stomata during transpiration?
Transpiration is a necessary evil in plants. Explain.
Identify the wrong statement and correct it.
Leaves perform the function of transpiration only.
Excessive transpiration is due to ______.
Observe the diagram and answer the following;
 (i) |
 (ii) |
- Are these types of guard cells found in monocots or dicots?
- Which of these shows a higher water content (i) or (ii)?
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(a) State whether the following statement are True or False.
(b) Rewrite the false statement in the correct form by changing either the first or the last word only.
Transpiration helps to cool the body of the plant.
