Question

explain potassium ion concentration theory​

Answer 1

║⊕ANSWER⊕║

• K + ion theory was proposed by Levitt in 1974.
• This ion exchange occurs by the expenditure of ATP energy.
• Increased concentration of K and malate ions in the guard cells vacuole, will cause sufácient osmotic pressure to absorb water from surrounding cells.
• H ions are transported to subsidiary cells and in exchange of which K ion move inside guard cells.
• This is called ion exchange.
• K ions are balanced by malate ions present in guard cells and also by taking in some Cl ions.
• Guard cells are cells surrounding each stoma.
• They help to regulate the rate of transpiration by opening and closing the stomata.
• guard cells are turgid, or swollen, and the stomatal opening is large.
• This turgidity is caused by the accumulation of K+ (potassium ions) in the guard cells.

Answer 2

Explanation:

It was propossed by Levit in 1974.... Increased concentration of K and malate ions in guard cells vacuole will cause sufficient osmotic pressure to absorb from surrounding cells. This in turn will increase turgor pressure of guard cells.