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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 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.
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Solution
- The process being studied is Transpiration. Transpiration is the process during which water is lost in the form of water vapour through the aerial parts of the plant.
- The pot was enclosed in a rubber sheet to prevent evaporation of water from the soil.
- Two external factors which can accelerate transpiration are:
- Bright sunlight
- Low humidity
- Two adaptations in plants to reduce the above process are:
- Sunken stomata
- Narrow leaves
RELATED QUESTIONS
Which of the following statements are true and which ones are false? Give reason in support of your answer.
Some desert plants have sunked stomata on their leaves.
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?
From which structure cuticular transpiration occur in plants?
The diagram alongside represents a structure found in a leaf. Study the same and answer the questions that follow:
(i) Name the parts labeled A and B.
(ii) What is the biological term for the above structure?
(iii) What is the function of the part labeled A?
(iv) Mention two structural features of A, which help in the function mentioned in (iii) above?
(v) Where is this structure likely to be found in a leaf?
(vi) The structure (fig.5.22) helps in the process of transpiration. Explain the term transpiration.
(vii) How many other cells are found surrounding this structure as seen in the diagram?
Choose the correct answer:
Transpiration is more ____________
Give Reasons for the following:
Young plants wilt on a hot sunny day.
What are lenticels? Where are they found?
Give Reasons for the following:
Forest bring in the rain, transpiration is the cause.
Give Reasons for the following:
Why do some herbaceous plants show wilting of leaves during mid-day which again recover in the evening?
State the Location:
Cuticle
