Question

how do guard cells regulate opening and closing of stomatal pores?

Answer 1

Answer:



Primary School 

 

Biology 

 

5 points

How do guard cells regulate opening and closing of stomatal pores?

write the answer according to a 3 mark question

Ask for details 

 

Follow 

 

Report

 by AaditeeRajSingh 17.06.2018

Answers



YASH3100 

 

Genius

HEYA!!!

HERE IS YOUR ANSWER,

> The swelling of guard cells due to absorption of water causes opening of stomatal pores while shrinking of guard cells closes the pores.

> Opening and closing of stomata occurs due to turgor changes in guard cells.

> When guard cells are turgid, stomatal pore is open while in flaccid conditions, the stomatal aperture closes.

HOPE IT HELPS YOU,

THANK YOU.☺️☺️

Answer 2

It is maintained by potassium ion concentrations

during daytime,the chloroplasts in the guard cells photosynthesise which leads to production of ATP .This atp is used to Actively pump potassium ions of the adjacent cells into guard cells .Increased potassium ion concentration in the guard cell makes them hypertonic ,so,more water is drawn in and guard cell become turgid and open out the stomatal pore

Reverse happen at night .The potassium ion leak out thus removing water from guard cell and making them flaccid and this leads to closure of stomatal pore

HOPE IT HELPS MATE