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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
Give Reasons for the following:
Plants absorb more water than their requirement
What are lenticels? Where are they found?
Explain the Term :
Wilting
Differentiate Between Transpiration and Perspiration.
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
Main function of lenticel.
Complete the following sentence with appropriate word:
Transpiration is the loss of water__________________from the leaves of the plant.
Mark the most appropriate answer in the following:
Transpiration is very low during storms due to:
