Question

The most abundant cation in the intracellular fluid is

• A. K${}^{+}$
• B. Na${}^{+}$
• C. Ca${}^{2+}$
• D. H${}^{+}$

Answer 1

Answer: (A)

K${}^{+}$

Potassium is absorbed as potassium ion from the soil by the plant. It is most abundant cation in the intracellular fluid and maintains anion-cation balance in cells. It is involved in protein synthesis. It helps in opening and closing of stomata. It also helps in maintaining turgidity of the cells.

So the correct answer is 'K+'.