Question

structure of stomata ​

Answer 1

Answer:

Structure of Stomata. Stomata are the tiny pores present in the epidermal surface of leaves. The pores are guarded by two kidney-shaped cells known as guard cells. ... In isobilateral leaf in a monocotyledonous plant, the number of stomata is equal on both the surfaces.

Answer 2

Answer:

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structure of stomata __?

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Stomata are the tiny apertures found on the epidermis of leaves and young green stems. Each stoma is surrounded by two specialized epidermal cells, called guard cells. They differ from epidermal cells in their shape (kidney or bean shaped) and in the presence of chloroplasts. The inner wall of the guard cell is thick and elastic, whereas the outer wall is thin. The immediate cause of the opening or closing of the stomata is a change in the turgidity of the guard cells. When turgidity increases within the two guard cells flanking each stomatal aperture or pore, the thin outer walls bulge out and force the inner walls into a crescent shape. Opening of the stoma is also aided due to the orientation of the microfibrils in the cell walls of the guard cells. Cellulose microfibrils are oriented radially rather than longitudinally, making it easier for the stoma to open. Guard cells are bordered by one or more modified epidermal cell called subsidiary cells or accessory cells.

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Usually the lower surface of a dorsiventral (dicotyledonous) leaf has a greater number of stomata while in isobilateral (monocotyledonous) leaf they are about equal on both surfaces.