. is an inorganic material It consists of aluminium and silicon oxides.
- consists of carbonaceous residue. It is derived from lignin of cell walls.
- The exchange of anions or cations of the cells with the ions of
the same and equivalent charge of outer solution is called
________ exchange.
The equilibrium of ions between root cells and soil solution in
the presence of fixed ions in the root cells is called ___________
equilibrium.
- The transport by which a substance indirectly drives the active
transport of several other solutes is called __________
| Ans
1. Clay 2. Humus |
3. ion 4. Donnan |