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Question
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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Solution
(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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RELATED QUESTIONS
Briefly explain how the rate of transpiration is affected by
Intensity of light
Given below is an apparatus which has setup to investigate a physiological process in plants. The setup was placed in bright sunlight. Answer the questions that follow:
Why was the pot enclosed in a rubber sheet?
Choose the correct answer:
In herbaceous plants, following percentage of absorbed water comes out __________
What is meant by the term transpiration stream?
Give Reasons for the following:
Plants absorb more water than their requirement
What are the disadvantages of transpiration?
Explain the Term
Transpiration
Complete the following sentence with appropriate word:
Transpiration normally takes place in the presence of ___________.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
More transpiration occurs from the upper surface of a leaf.
