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प्रश्न
Mention the differences between stomatal and lenticular transpiration.
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उत्तर
| Sr. No. | Stomatal Transpiration | Lenticular Transpiration |
| 1. | Loss of water in the form of water vapour through minute pore called stomata. | Loss of water in the form of water vapour through lenticels. |
| 2. | Stomata are confined to epidermis of green shoot and leaves. | Lenticels are confined in woody stem and fruits. |
| 3. | It amounts for 90% to 95% of the water transpired from leaves. | It amounts for 1% to 5% of the total water loss by the plants. |
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संबंधित प्रश्न
Name the following:
Any two parts of a leaf which allow transpiration.
The apparatus shown in the following diagram is Garreau’s potometer designed to demonstrate unequal transpiration from the two surfaces of a dorsiventral leaf. Before keeping the leaf in between the cups, anhydrous calcium chloride (CaCl2) contained in two small vials were weighed and placed in both the cups. The ends of the cups were closed with corks through which two mercury manometers were connected. After few hours, CaCl2 vials were taken out and weighed again.
What is the purpose of using a manometer?
Where are stomata generally found?
Given below is an apparatus used to study a particular process in plants. Study the same and answer the questions that follow :
(i) Name the apparatus.
(ii) Mention one limitation of this apparatus.
(iii) Which phenomenon is studied with the help of this apparatus?
(iv) What is the function of the part marked ‘reservoir’?
(v) What is the role of the air bubble in the experiment?
Draw a neat diagram of the stomatal apparatus found in the epidermis of leaves and label the Stoma, Guard cells, Chloroplast, Epidermal Cells, cell wall and Nucleus.
Complete the following sentence with appropriate word:
95% of the total transpiration takes place through ________.
Guard cells help in regulating the ______.
Write a short note on lenticular transpiration.
Given below is the figure of a stoma. Study the same and answer the following questions:
- Label the guidelines A and B.
- Write the exact location of the above-mentioned structures.
- Mention one important role of structure A.
- Write three important roles for structure B.
- Redraw the same figure when structures A are in flaccid condition. When does the flaccid condition occur?
