A metal ion involved in stomatal regulation i | vedclass

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

Question

(B) According to the proton transport theory,proposed by Levitt $(1974)$,the regulation of stomata (i.e.,opening and closing) depends upon the active

Vedclass · Accepted Answer

Potassium

Vedclass · Answer

(B) According to the proton transport theory,proposed by Levitt $(1974)$,the regulation of stomata (i.e.,opening and closing) depends upon the active entry and exit of potassium ions $(K^+)$ in the guard cells.During the day,starch is converted into malic acid in the guard cells,which dissociates into malate ions and protons $(H^+)$.The protons are pumped out of the guard cells,and in exchange,potassium ions $(K^+)$ are taken up from the surrounding subsidiary cells.This accumulation of $K^+$ ions decreases the water potential of the guard cells,leading to the influx of water,which causes the stomata to open.

$A$ metal ion involved in stomatal regulation is

Similar Questions

Loss of liquid water by guttation occurs through

Which of the following is the most likely cause for the wider opening of stomata?

In both transpiration and evaporation,water is lost in the form of vapour,yet they differ because:

Transpiration efficiency is the ratio of

Conversion of starch to organic acid is essential for

Vedclass Test Series

Exam Paper Generator

Online Exam Module