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प्रश्न
Describe an experiment to show that the plant loses water through its leaves.
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उत्तर
Experiment: To demonstrate that the plants lose water through its leaves.
- Take one small-sized, well-watered potted plant having a few branches. Place a polythene bag over its one branch as shown in A and tie it with a rubber band.
- Remove all the leaves from another branch (B) of the same plant, cover this too with a polythene bag and tie it with a rubber band.
- Place the plant in sunlight, and observe it after 4-6 hours. You will notice that drops have appeared on the inner surface of the polythene bag over branch A, while no water drops appear on branch B.
- This set-up indicates that most water gets evaporated from the plant through its leaves
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संबंधित प्रश्न
Fill in the blank with the suitable term given below:
Transpiration is reduced if the air is __________.
Mention the two ways in which transpiration helps the plants.
Which of the following statements are true and which ones are false? Give reason in support of your answer.
Atmospheric humidity promotes transpiration from a green plant.
Why are the stomata in most plants more numerous on the lower surface of a leaf instead of being on the upper surface?
Suppose you have a small rose plant growing in a pot. How would you demonstrate transpiration in it?
Answer the following (only in few words);
Where does transpiration take place in leaves? Give names of the various parts.
The diagram alongside represents a structure found in a leaf. Study the same and answer the questions that follow:
(i) Name the parts labeled A and B.
(ii) What is the biological term for the above structure?
(iii) What is the function of the part labeled A?
(iv) Mention two structural features of A, which help in the function mentioned in (iii) above?
(v) Where is this structure likely to be found in a leaf?
(vi) The structure (fig.5.22) helps in the process of transpiration. Explain the term transpiration.
(vii) How many other cells are found surrounding this structure as seen in the diagram?
Explain the Term :
Wilting
Differentiate Between Transpiration and Guttation.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Transpiration takes place only in green plants
