Question

Short answer type questions.
Describe the carbonic acid exchange theory for absorption of mineral salts by plants

Answer 1

The theory stated that the CO${}_2$ released during respiration process in the root cell combines with the water to form carbonic acid. Carbonic acid dissociates into $H^{+}$ and $HCO{{}_3}^{-}$These hydrogen ions may be exchanged for cations adsorbed on clay particles.