Describe how potassium is essential, Biology

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How potassium is essential for the following physiological functions

It is vital for photosynthesis. When K + ion is deficient, photosynthesis declines and respiration increases which lowers the plant's carbohydrate supply.
It is essential for protein synthesis.
It is important in the breakdown of carbohydrates by a process which provides energy for plant growth.
It helps to control ionic balance.
It is important in the translocation of heavy metals such as iron.
It helps the plant to overcome the effects of diseases.
It is important in fruit formation.
It is involved in the activation of more than 60 enzyme systems which regulate the rates of major plant metabolic reactions.
The process of opening and closing of plant leaf pores (stomata) is regulated by potassium, and thus regulates the use of water efficiently.

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