Phenyl mercuric acetate (PMA) results in:
Correct answer: A. Reduced photosynthesis
- A. Reduced photosynthesis
- B. Reduced transpiration
- C. Reduced respiration
- D. Killing of plants
Explanation
Phenyl mercuric acetate (PMA) results in reduced transpiration. PMA is an antitranspirant. These are some chemicals whose limited application on the leaf surface reduces or checks transpiration. A good antitranspirant increases leaf resistance but does not affect the mesophyll resistance. So option B is correct.
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