Question

Donnan equilibrium is a good mechanism for

• A. Accumulation of starch only
• B. Accumulation of ions
• C. Accumulation of water
• D. All of the above

Answer 1

The correct option is B Accumulation of ions

Donnan equilibrium explains passive mineral absorption in plants. According to this concept, the occurrence of a nondiffusible ion in the cell interior will cause the similarly charged external ion to diffuse inwards. The other ion will diffuse inwards till the multiple of free cations and anions in the interior becomes equal to the multiple of free cations and anions in the external medium.

So, the correct answer is option B.