Stomata open and close in response to -
Responses
water being pumped in and out of guard cells
water being pumped in and out of guard cells, ,
crystal formation in the plant due to excess glucose.
, crystal formation in the plant due to excess glucose.,
the lack of available sunlight during the night
the lack of available sunlight during the night, ,
stimulation by auxins producing rapid growth
stimulation by auxins producing rapid growth, ,