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प्रश्न
उत्तर
Experiment to show that during transpiration , evaporation of water takes place in vapour form :
- Take a well watered potted plant .
- Cover the potted plant in a polythene sheet.
- Keep the potted plant in the sunlight.
- Droplets of water are seen on the inner side of the polythene . This shows that the water evaporates and condenses to form droplets of water .
APPEARS IN
संबंधित प्रश्न
Mention the two ways in which transpiration helps the plants.
(a) State whether the following statements are True Or False?
(b) Rewrite the false statements,in the correct form by changing either the first or the last word only .
Voltmeter is an instrument used for measuring the rate of transpiration in green 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.
From which structure cuticular transpiration occur in plants?
Given below is an example of a certain structure and its special functional activity:
chloroplasts and photosynthesis
In a similar way, write the functional activity against the following:
Xylem and ______
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.
When the weight of the test tubes A and B is taken before and after the experiment, what change is observed? Justify.
Explain the Term
Transpiration
The figure given below represents an experimental setup with a weighing machine to demonstrate a particular process in plants. The experimental set-up was placed in bright sunlight. Study the diagram and answer the following questions:
- Name the process intended for the study.
- Define the above mentioned process.
- When the weight of the test tubes (A and B) is taken before and after the experiment, what is observed? Give reasons to justify your observations in A & B.
- What is the purpose of keeping the test tube B in the experimental set-up?
- What is the purpose of putting oil in the test tube?
