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प्रश्न
Differentiate Between Transpiration and Guttation.
उत्तर
| Transpiration | Guttation |
| (i) It is regulated by guard cells | It is due to root pressure. |
| (ii) It occurs at day time. | It occurs at night. |
| (iii) Water escapes through stomata and lenticels. | Water escapes through hydathodes only. |
| (iv) Water escapes in the form of water vapour. | Water escapes from the hydathodes on the margin of the leaves in the form of water droplets. |
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संबंधित प्रश्न
Which one of the following favours the fastest transpiration rate?
Transpiration helps in creating ______ force and in eliminating excess ______.
Which of the following statements are true and which ones are false? Give reason in support of your answer.
Most transpiration occurs during midday.
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:
Name the process being studies. Define the process.
Give Reasons for the following:
Why do some herbaceous plants show wilting of leaves during mid-day which again recover in the evening?
Differentiate Between Transpiration and Evaporation.
Study the diagram given alongside and answer the questions that follow:
(i) Explain the physiological process of being study.
(ii) What will be the observations in the two test-tubes after about 2-3 days?
(iii) Give a reason for your answer in (ii) above.
(iv) Why is the surface of water covered with oil?
(v) State the purpose of setting up test tube B.
Complete the following sentence with appropriate word:
Transpiration normally takes place in the presence of ___________.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
The pH of the guard cells increases during day time
Write the functional activity of the following structure:
Hydathodes
