Stomata are the tiny pores present on the outer surface or epidermis of the leaves and in some cases also on the stem. These pores help in the exchange of gases,transpiration and photosynthesis. The opening and closing of stomata is controlled by Abscisic acid hormone.
A stomata is consist of subsidiary cells, Guard cells and stomatal aperture. Subsidiary cells are the cells that surrounds the guard cells.Based on the number of subsidiary cells stomata can be of different types. Guard cells are bean shaped cells that surrounds the stomatal aperture. These cells regulate the closing and opening of stomata. Stomatal aperture is a tiny pore present on the surface through which exchange of material takes place.
The small openings present on the epidermis of leaves and stem ? | |||
Right Option : B | |||
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In plants like grasses the guard cells are of | |||
Right Option : B | |||
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Which of the following are correct : (a) Stomata are the tiny pores present on the outer surface or epidermis of the leaves and in some cases also on the stem. (b) Stomata regulate exchange of gases like oxygen and carbon dioxide gas. (c) Subsidiary cells are the cells that surrounds the guard cells. | |||
Right Option : D | |||
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