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प्रश्न
Suppose you have a small rose plant growing in a pot. How would you demonstrate transpiration in it?
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उत्तर
Take the small potted rose plant and cover it with a transparent polythene bag. Tie its mouth around the base of the stem. Leave the plant in sunlight for an hour or two.
Drops of water will soon appear on the inner side of the bag due to the saturation of water vapour given out by the leaves. A similar empty polythene bag with its mouth tied and kept in sunlight will show no drops of water. This is the control to show that plants transpire water in the form of water. If tested with dry cobalt chloride paper, the drops will be confirmed as water only.
संबंधित प्रश्न
How does temperature, light intensity and wind affect transpiration?
Fill in the blank with the suitable term given below:
Transpiration is reduced if the air is __________.
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.
Define the above mentioned process.
Give Reasons for the following:
Plants absorb more water than their requirement
Give Reasons for the following:
Balsam plants wilt during midday even if the soil is well watered.
What are lenticels? Where are they found?
Transpiration is significant for all except ______.
An outline sketch of a tree is shown in a diagram below. Study the same and answer the questions that follow:
- Name and define the phenomenon labelled A in the diagram.
- Write the significance of the process mentioned in A for the plants.
- What do the direction of the arrows in B and C indicate? Name the phenomena.
- Draw a neat and labelled diagram of an opened stomata.
