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प्रश्न
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उत्तर
Mechanism of stomata: Stomata are small pores present on the leaves which contains two kidney-shaped guard cells. The opening and closing of stomata depends upon the changes in the turgidity of their guard cells. Due to absorption of water the guard cells become turgid.Their inner walls are pulled apart by their outer wall.The gap between the guard cells become wider and stomata open.When guard cells are flaccid due to loss of water, the outer walls are not stretched, their inner walls are not pulled apart decreasing the gap between the guard cells and stomata close.
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संबंधित प्रश्न
Given ahead is the diagram of an experimental set up to study the process of transpiration in plants. Study the same and then answer the question that follow:
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.
How do stomata differ from a lenticel?
Explain the Term
Stomatal transpiration
The figure below represents the vertical section of a leaf:
(i) Name the parts labeled 1 to 5.
(ii) What do the two arrows (dotted and solid) indicate in the day time and at night?
(iii) Could you add one more arrow in the figure? If yes, what for?
(iv) How many leaf veins have been shown in this section?
Name the following:
The process of getting rid of excess water in the form of water vapour through the 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
How will you differentiate the different types of transpiration?
Give a reason/suitable explanation.
Leaves of some plants wilt during midday and recover in the evening.
