Phenyl mercuric acetate

A. Reduces transpiration

B. Reduces photosynthesis

C. Decreases water absorption

D. Kills the plant

Answer: Option A

Solution(By Examveda Team)

Phenyl mercuric acetate Reduces transpiration.
Phenyl mercuric acetate (PMA) induced stomatal closure and decreased transpiration.
Stomata of leaves treated with any of the 3 PMA concentrations closed earlier and at a higher relative water content than did stomata of untreated leaves.