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प्रश्न
How do stomata differ from a lenticel?
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उत्तर
Stomata present, on the leaf and open only during the day while lenticel present on the stem of woody plants and open at all times.
APPEARS IN
संबंधित प्रश्न
Name the following:
Any two parts of a leaf which allow transpiration.
Distinguish between the following:
Stomata and lenticels
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 the diagram of an experimental set up to study the process of transpiration in plants. Study the same and then answer the questions that follow:
(i) What is the colour of dry cobalt chloride paper?
(ii) Is the experimental leaf a monocot or a dicot? Give a reason to support your answer.
(iii) Why axe glass slides placed over the dry cobalt chloride papers?
(iv) After about half an hour what change, if any, would you expect to find in the cobalt chloride paper placed on the dorsal and ventral sides of the leaf? Give a reason to support your answer.
(v) Define the term ‘transpiration’.
Complete the following sentence with appropriate word:
95% of the total transpiration takes place through ________.
State the Location:
Stomata
Write the functional activity of the following structure:
Stomata
Mark the most appropriate answer in the following:
In the mechanism of opening and closing of stomata, the important factor is
Mark the most appropriate answer in the following:
Stomata open during day and close at night because:
