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the variations in shape, number , size and distribution of stomata on two surfaces of leaves of different plants. Stomatal index can be calculated by using the formula Stomatal index = ×100% S E. Here S and E are the numbers of stomata and epidermal cells respectively per microscopic field. QUESTIONS • What is the function of guard cells in ...
Examine the leaf impression under a light microscope. 8. Search for areas where there are numerous stomata, and where there are no dirt, thumb prints, damaged areas, or large leaf veins. On your lab paper, draw the leaf surface with stomata and label if the stomata is open or closed.
Plants acquire CO2 through small pores called stomata (singular = stoma). The stomatal openings are surrounded by two guard cells, which swell and shrink to open and close the pore. Oxygen...
Light microscopy can be used to observe and compare the density and distribution of stomata on different leaf surfaces. Explaining observations of stomatal density using ideas about transpiration and water loss.
Marker pen . Digital camera to capture microscope images of the leaf surfaces – this greatly aids in counting stomata and is a record of the results for future reference . Method ‐ impression of leaf surface to quantify stomata. the leaf surface. The cast is removed with sticky tape and placed on.
The stomata are located at the base of these pockets, called stomatal crypts. The trichomes help capture evaporating moisture and maintain a relatively humid environment around the stomata. These stomatal crypts are located only on the underside of the leaves, where they experience less sun exposure and therefore less transpiration.
1 Δεκ 2022 · This occurs through minute microscopic pores called stomata (singular, stoma) present in the leaf. The stomata is an elliptical pore which are found on the surface of leaves, i.e. both the upper and lower epidermis. These minute pores possess chloroplasts and are enclosed by two-kidney shaped guard cells on its either side.
