Question

is the ph of guard cells more during night

Answer 1

yes guard cell become basic ( high pH ) in night and acidic in day when photosynthesis is going on ...

Answer 2

Answer:

No the ph of guard cell is low(acidic) during night time

Explanation:

It is because during night time no photosynthesis occurs,result in the increase of carbon dioxide which increase the H+ ion concentration in guard cell as a the ph of guard cells decrease during night time