Question
7.By what process does water leave the guard cell to become flaccid?
Answer
4.3
(230 Votes)
William
Veteran · Tutor for 11 years
Answer
Transpiration
Explanation
The process through which water leaves the guard cells of a plant, causing the cells to become flaccid, is known as transpiration. Transpiration is the evaporation of water from plants. It occurs mainly through the leaves through small openings known as stoma. Under certain environmental conditions, such as high intensity light, low relative humidity, and high temperature, the stomata opens to allow the escape of water vapour, a process powered by the water potential gradient that exists between the guard cells -- that are full of water,/consequently turgid -- and the outside air. When the guard cells lose water, they become less turgid and more flaccid which leads to the closing of the stomata.