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Question
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
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