Stomatal movements are influenced by a number of environmental factors, Which of the following statements is `//`are incorrect regarding this?
(ii)Blue light keeps stomata open during the day pormoting the movement of `K_(+)` ions into guard cells.
(ii) Increased `CO_(2)` concentraation reduces the pH of guard cells which promotes conversion of sugar into starch ultimately causing closure of stomata.
(iii) Abscisic acid under stress conditions, causes repid movement of `K_(+)` ions into guard cells.
Highly concentrated sucrose or salt solution when applied over to stomata results in stomata opening.

Options

A. `(i)` and `(ii)`
B. `(iii)` and `(iv)`
C. `(iii)`only
D. `(iv)` only

Answer

B

Explanation

Abscisic acid `(ABA)`, is called as stress hormone as it causes closing of stomata under water stress conditions by causing rapid movement of `K^(+)` ions out of the guard cells. Highly concentrated sucrose `//`salt solution results in stomatal closure.