Question
5.When the stomata is closed is the guard cell turgid or flaccid?
Answer
4.1
(207 Votes)
Oliver
Elite · Tutor for 8 years
Answer
Flaccid
Explanation
In plant physiology, stomata are considered the tiny openings or pores, primarily found in the outer leaf skin layer or epidermis. They play the crucial role in gaseous exchange for photosynthesis. Each Stoma is flanked by a pair of guard cells that regulate its opening and closing. A guard cell becomes turgid, due to the accumulation of K+ ions, this triggers the stoma to 'open'. However, when a stoma is in a 'closed' state, the guard cell which surrounds it would be considered flaccid. This is due to an efflux of ions from the guard cell, leading to loss of turgor pressure.