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Question
Mark the most appropriate answer in the following:
In hot summer days, plant cooling is due to :
Options
Loss of water vapours from leaves
Transport of water in a plant
Loss of liquid water
Loss of water from the entire plant
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Solution
Loss of water vapours from leaves
RELATED QUESTIONS
Given below is an apparatus which was setup to investigate a physiological process in plants. The setup was placed in bright sunlight. Answer the questions that follow:
- Name the process being studied. Define the process.
- Why was the pot enclosed in a rubber sheet?
- Mention two external factors which can accelerate the above process.
- List two adaptations in plants to reduce the above process.
- Draw a neat, labelled diagram of a stomatal apparatus.
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:
Why was the pot enclosed in a rubber sheet?
Answer the following (only in few words);
Give one important difference between transpiration and evaporation.
Distinguish between the following:
Transpiration and evaporation
Choose the correct answer:
Transpiration generates __________
Choose the correct answer:
Who had said that "transpiration is a necessary evil"?
Give Reasons for the following:
Young plants wilt on a hot sunny day.
Give Reasons for the following:
Balsam plants wilt during midday even if the soil is well watered.
Explain the Term :
Wilting
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?
