stoma
guard cell or cells 'celled guard cells that are found plants. the cell surface(epidermis) of the act only. for the exchange of gases and water vapor. when studied under a microscope. it can be seen that the guard cells to chape' resulting in the hot weather and the crops in the state have the loss of water to it. (without any reason ) guard cells to close. to prevent evaporation of water from leaves. lt is trying to treat.