Question

Which one of the following is not an anti-transpirant?

• A. Phenyl mercuric acetate
• B. 6-Benzylaminopurine
• C. Silicon oil
• D. Low velocity of air

Answer 1

The correct option is B 6-Benzylaminopurine

Phenyl mercuric acetate or PMA is a common anti-transpirant. Transpiration can also be stopped by covering leaf with low viscosity fluid and silicon oil. Low viscosity fluids and silicon oil will cut off direct exposure of stomata with the atmosphere and form a sort of waterproofing layer through which water vapour cannot escape.