by the help of diagram show the position of gaurd cells : in a well watered and a not well watered plant
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Guard Cells
Definition, Function, Structure of Stomata on Plants
Definition: What is a Guard Cell?
Essentially, guard cells are two bean-shaped cells that surround a stoma. As epidermal cells, they play an important role in gaseous exchange in and out of plant leaves by regulating the opening and closing of pores known as a stoma. In addition, they are the channels through which water is released from leaves to the environment.
As such, guard cells play a crucial role in photosynthesis by regulating the entry of materials necessary for the process. Apart from regulating gaseous exchange (as well as water release from leaves), they have also been shown to contain chloroplasts which also make them a site of photosynthesis.