Discussion
Potassium in plants mainly helps in
Answer: C
Potassium mainly helps in enzyme activation and stomatal regulation.
Potassium is not built into any organic compound in the plant; it stays as the K+ ion. In that form it activates more than 60 enzymes, including those of photosynthesis, respiration and starch and protein synthesis. Its movement into and out of the guard cells changes their turgor and so opens and closes the stomata, which controls transpiration and is why potassium improves drought tolerance.
Energy transfer through ATP is the role of phosphorus. Chlorophyll synthesis depends on magnesium, which sits at the centre of the molecule, and on nitrogen. Cell wall formation needs calcium, as calcium pectate in the middle lamella, and boron.
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