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प्रश्न
Study the diagram given below and answer the questions that follow:
(i) Name the process being studied in the above experiment.
(ii) Explain the process mentioned in (i) above.
(iii) Why is oil placed over water?
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उत्तर
(i) Transpiration
(ii) It is the process by which plants lose water as vapours through the aerial parts.
(iii) To prevent evaporation of water from the test tube.
(iv)
- In bright sunlight, the level of water decreases quickly.
- In humid conditions level of water does not decrease for a long time.
- On a windy day, the level of water decreases very quickly.
(v)
- The number of stomata may be reduced.
- leaves may become narrow.
- A thick layer of cuticle on the leaf surface helps to decrease transpiration
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संबंधित प्रश्न
Which one of the following favours the fastest transpiration rate?
Fill in the blank with the suitable term given below:
Transpiration is reduced if the air is __________.
(a) State whether the following statement are True or False.
(b) Rewrite the false statement in (a) above in the correct form by changing either the first or the last word only.
Transpiration creates a pull for the upward movement of the sap.
Which of the following statements are true and which ones are false? Give reason in support of your answer.
Most transpiration occurs during midday.
The figure given below represents an experimental setup with a weighing machine to demonstrate a particular process in plants. The experimental setup was placed in bright sunlight. Study the diagram and answer the following questions.
What is the purpose of keeping the test tube B in the experimental setup?
Complete the following sentence with appropriate word:
Plants become cool as a result of __________.
Complete the following sentence with appropriate word:
Transpiration is the loss of water__________________from the leaves of the plant.
Complete the following sentence with appropriate word:
The leaves of the __________ plants have cuticular wax.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Root hairs are the extensions of the outer epidermal cells of the root
