11.In which of the following forms is iron absorbed by plants? A. Ferric B. Ferrous C. Free element D. Both ferric and ferrous
Option A Iron is the most abundant mineral ion required by the plant. It is absorbed in ferrous and ferric form from the rhizosphere of the plant. Fe2+ (ferrous) form is relatively soluble but is readily oxidized to Fe3+ (ferric) at the junction of the protoxylem and the metaxylem, chelated by citrate, and then transported in the metaxylem to the other parts of the plant.
