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प्रश्न
Give Reasons for the following:
Balsam plants wilt during midday even if the soil is well watered.
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उत्तर
The transpiration rate in such plants is very high during mid-day and exceeds the water absorption rate of the roots. So more water is lost than absorbed. This water deficiency in cells causes them to lose turgidity and the plants wilt.
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संबंधित प्रश्न
How does temperature, light intensity and wind affect transpiration?
Given below is an apparatus which has setup to investigate a physiological process in plants. The setup was placed in bright sunlight. Answer the questions that follow:
List two adaptations in plants to reduce the above process.
Distinguish between the following:
Transpiration and evaporation
Choose the correct answer:
In herbaceous plants, following percentage of absorbed water comes out __________
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.
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?
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Root hairs are the extensions of the outer epidermal cells of the root
State the Location:
Cuticle
Write the functional activity of the following structure:
Guard cells
