This hormone affects the opening and closing | vedclass

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

Question

(B) $ABA$ (Abscisic acid) causes stomata to close by inhibiting an $ATP$-dependent pump in the plasma membrane of guard cells.The application of exoge

Vedclass · Accepted Answer

Abscisic acid

Vedclass · Answer

(B) $ABA$ (Abscisic acid) causes stomata to close by inhibiting an $ATP$-dependent pump in the plasma membrane of guard cells.The application of exogenous $ABA$ on the leaves of normal plants causes the closing of stomata within a few minutes.$ABA$ acts in the presence of $CO_2$,which decreases the $pH$ of guard cells.$ABA$ induces the loss of $K^+$ ions,which decreases the osmotic concentration of guard cells compared to adjacent epidermal cells.This causes exosmosis,and the turgidity of the guard cells decreases,leading to stomatal closure.

This hormone affects the opening and closing of stomata.

Similar Questions

Which hormone is produced by plants in adverse environmental conditions?

Which of the following is an acid derived from carotenoids?

$ABA$ (Abscisic Acid) possesses:

Abscisic acid controls

Abscisic acid $(ABA)$ is an antitranspirant. It prevents transpiration by:

Vedclass Test Series

Exam Paper Generator

Online Exam Module