Guard cells open and close due to the presence of which ion

Options :
  1. sodium
  2. potassium
  3. phosphate
  4. chloride

Answer and Explanation :-

Answer: Option 2


Sorry there is no explanation for this answer. Please help others by posting your response below

How do you rate this queston?  Very Easy  Easy  Average  Above Average  Tough

Previous Question : The swallowing of raisins after keeping them in water is due to

Next Question : The rate of transpiration is measured by --------

Click here for free online test on Physiology


 (Getemail alerts when others member replies)

The day, like the previous days, dragged sluggishly by in a kind of insipid idleness, devoid even of that dreamy expectancy which can make idleness so enchanting.
-Vladimir Nabokov Mary