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प्रश्न
Give Reasons for the following:
Transplanting of seedlings to a flowerbed in the evening is better than doing so in the morning.
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उत्तर
During day time the transpiration rate is very high. As a result to excessive transpiration and the seedling will wilt and ultimately die. However, in the evening, the transpiration rate is very slow and the seedling will be able to retain the water absorbed from the soil and as a result of this they will remain transplanted.
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संबंधित प्रश्न
Answer the following (only in few words);
In which form, water comes out in transpiration?
Give Reasons for the following:
Land plants die if their roots remain waterlogged.
What are lenticels? Where are they found?
Give Reasons for the following:
Why do some herbaceous plants show wilting of leaves during mid-day which again recover in the evening?
Explain the Term :
Hydathode
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?
Give Technical Term
Loss of water from the aerial parts of a plant.
Name the following:
Holes present on the surface of the stems and twigs for transpiration.
Give Technical Term
The apparatus used to compare the rate of transpiration in cut shoot.
Complete the following sentence with appropriate word:
Transpiration is the loss of water__________________from the leaves of the plant.
