Root systems grown in the presence of metals showed visible
and significant bending toward free-metal-patches in the culture
medium, with angle values of 13, 23, 30 and 25 in Cd, Cu, Zn and
Cd/Cu/Zn treatments, and a non-significant fluctuation of 4 (both
at left and at the right respect to gravity direction) in control plants
(Table 2).