Lewitt's explanation for stomatal action is d | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) Lewitt proposed the $pH$ theory for stomatal movement. According to this theory,the opening and closing of stomata are regulated by changes in the

Vedclass · Accepted Answer

Variations in $pH$ value

Vedclass · Answer

(B) Lewitt proposed the $pH$ theory for stomatal movement. According to this theory,the opening and closing of stomata are regulated by changes in the $pH$ of the guard cells. During the day,photosynthesis reduces the $CO_2$ concentration,leading to an increase in $pH$ (alkaline condition). This high $pH$ promotes the conversion of starch into soluble sugars,which lowers the water potential of guard cells,causing water to enter via osmosis,resulting in stomatal opening. Conversely,at night,$CO_2$ accumulates,lowering the $pH$ (acidic condition),which triggers the conversion of sugar back into starch,leading to stomatal closure.

Lewitt's explanation for stomatal action is due to

Similar Questions

In scotoactive opening of stomata,they remain open during

The opening and closing of stomata due to the activity of water is known as:

The trunk of a tree shrinks in the day due to

When is the transpiration pull generated?

When an oak leaf stoma is open more widely,the most likely process involved is

Vedclass Test Series

Exam Paper Generator

Online Exam Module