Which of these processes are necessary for roots to be able to take up water and minerals?
a. passive transport and diffusion
b. active transport and osmosis
c. respiration and evaporation

Roots of plants take up water and minerals from the roots via the medium of passive transport and diffusion. The facilitated diffusion of mineral ions into the root cells requires specific channel proteins in the membranes. The uptake of mineral ions in the plant cells is influenced by electrical gradient, concentration gradients, ionic balance and pumping of hydrogen ion.