Question

Which of the following scientists is credited with the mechanism of opening and closing of stomata related to $K^{+}$ exchange?

• A. Levitt
• B. Sayre
• C. Scarth
• D. Lloyd

Answer 1

The correct option is A Levitt

• Stomata are the structure present in the leaf which meant for exchange of gases and loss of water.
• Opening and closing of stomata are regulated by guard cells.
  
• Levitt found that in daytime starch gets converted into sugar which accumulates in guard cells.
  
• Fujino found that in the presence of light there is the influx of potassium ion in guard cells which causes the opening of stomata.
  
• High pH favours the closing of stomata.
  

So, the correct answer is 'Levitt'.