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प्रश्न
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?
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उत्तर
(i)
- Cuticle,
- Upper epidermis,
- Palisade tissue,
- Spongy parenchyma,
- Guard cell of a stoma.
(ii) In the day time dotted arrow shows the path of CO2 while solid arrow shows the path of oxygen. A night dotted arrow shows the path of oxygen while the solid arrow shows the path of CO2:
(iii) Yes, we can add one more arrow in the figure to show the loss of water during transpiration.
(iv) Only one leaf vein has been shown in this section.
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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?
Draw a labeled diagram of the stomatal apparatus and label the following in it: Stoma, Guard cells, Chloroplast, Epidermal cells, and Cell wall.
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.
Name the following:
A plant having sunken stomata.
Write the functional activity of the following structure:
Stomata
Guard cells help in regulating the ______.
Name the following:
The openings on the barks of trees through which transpiration occurs.
When guard cells are flaccid, the stoma must be ______.
