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प्रश्न
What are lenticels? Where are they found?
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उत्तर
Lenticels are minute, permanent openings which may develop in the young stems of woody plants. Some water is lost continuously through the lenticular openings in the form of water vapour.
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संबंधित प्रश्न
Why are the stomata in most plants more numerous on the lower surface of a leaf instead of being on the upper surface?
Briefly explain how the rate of transpiration is affected by
Intensity of light
Answer the following (only in few words);
In which form, water comes out in transpiration?
Answer the following (only in few words);
Give one important difference between transpiration and evaporation.
Choose the correct answer:
Who had said that "transpiration is a necessary evil"?
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 ______
Give Reasons for the following:
Transplanting of seedlings to a flowerbed in the evening is better than doing so in the morning.
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?
Write the functional activity of the following structure:
Lenticels
