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Question
Suppose you have a small rose plant growing in a pot. How would you demonstrate transpiration in it?
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Solution
Take the small potted rose plant and cover it with a transparent polythene bag. Tie its mouth around the base of the stem. Leave the plant in sunlight for an hour or two.
Drops of water will soon appear on the inner side of the bag due to the saturation of water vapour given out by the leaves. A similar empty polythene bag with its mouth tied and kept in sunlight will show no drops of water. This is the control to show that plants transpire water in the form of water. If tested with dry cobalt chloride paper, the drops will be confirmed as water only.
RELATED QUESTIONS
Which one of the following favours the fastest transpiration rate?
Name the factors which affect the rate of transpiration? State their role in each case.
Which of the following statements are true and which ones are false? Give reason in support of your answer.
Hydathodes are similar to stomata in plant physiology.
From which structure cuticular transpiration occur in plants?
Explain the Term
Transpiration
Explain the Term
Lenticular
Give Technical Term
Main function of lenticel.
Write the functional activity of the following structure:
Hydathodes
Write the functional activity of the following structure:
Guard cells
